Summary of Terms and Conditions

                           For a Definitive Agreement

                                     Between

                     CosmoCom, Inc. and Infocast Corporation


The purpose of this document is to present a summary of the terms and conditions
to be included in more definitive  agreements which will implement the March 23,
1999 Letter of Intent  between  Infocast and CosmoCom,  covering the period from
the  date of this  agreement  to the end of the  year  2000,  and to serve as an
initial purchase order from Infocast to CosmoCom.

I.       Software Purchases

         Infocast intends to purchase CosmoCall software licenses  sufficient to
enable at least 2000  CosmoCall  Agents by year-end 2000, and may purchase more.
CosmoCall software is licensed in various price element codes, which are defined
on the attached Exhibit A. By signing this agreement,  Infocast hereby places an
initial  order for  licenses  enabling  300  Agents as  enumerated  on the price
quotation attached as Exhibit B, subject to the following terms, conditions, and
milestones:

         A.       Dates, Purchases, Milestones, Payments

                  1.       Year 1999

                           Purchase  order - 300  CosmoCall  Agents per attached
                           quote,  and per the feature list  attached as Exhibit
                           C.

                           Total License Value US$754,500, payable in four parts
                           as  defined in the  following  table,  with  go/no-go
                           decision   based  on  passing  of   Acceptance   Test
                           Procedure  (ATP) for initial phase of 50 agents.  ATP
                           Definition  will be proposed by CosmoCom,  discussed,
                           and mutually agreed.


                           All Prices in U.S. Dollars



Date                 Description                                      Amount
21 April 99          Purchase Order Signed
21 April 99          Payment 50% of 50 Agents (50/300 of Total)       $62,875
1 June 99            Delivery of 50 Agents
1 July 99            Acceptance of 50 Agents per ATP (TBD, but
                     including supervisor/monitor feature)
1 July 99            Payment - Remaining 50% of 50 Agents             $62,875
1 July 99            Payment - 50% of 250 Agents                     $314,375
1 Aug 99             Delivery of 250 Agents
1 Sept 99            Payment - Remaining 50% of 250 Agents           $314,375
                                                TOTAL                $754,500

         Professional  services to be billed  monthly as actually  used (see III
         below).

         Infocast  intends  to  purchase  700  additional  CosmoCall  Agents for
         delivery prior to year end 1999.

2.       Year 2000

Infocast  intends to purchase  1000  additional  CosmoCall  Agents for  delivery
during the year 2000.

B.       Pricing

         1.   Subsequent Order Pricing

              For its subsequent  orders in  fulfillment of the future  purchase
              intentions  expressed in this  agreement,  the base price per Live
              Connection will be $1,100. All other future price elements will be
              enumerated on the quotation in Exhibit B.

         2.   Volume Purchase Incentives

              In addition to the CosmoCall Live Connection discount reflected in
              the above price,  special pricing  incentives will take effect for
              all  future  orders if  cumulative  software  purchases  reach the
              following levels by the end of the year 2000:

                           All Prices in U.S. Dollars


              (i)      At $2M and up to $5M - 5% discount; and

              (ii)     Over $5M in purchases - 8% discount.

C.       Payment terms

         50% with order(s) and balance net 30 days.

II.      Maintenance and Technical Support

         A.       CosmoCall  Support  Program.   Infocast  will  purchase,   and
                  CosmoCom  will  provide,  maintenance  and  technical  support
                  services to InfoCast from the date of this agreement until the
                  end of the year 2000 under a separate support  agreement to be
                  developed.  This  section  summarizes  the key  points of that
                  agreement.  The support program  includes 24 x 7 telephone and
                  remote  support,  and  access  to  all  software  upgrades  of
                  licensed  products.  Support  will be provided  to  designated
                  Infocast   personnel  who  have  received   CosmoCall  product
                  training.  Infocast will provide  technical support to its own
                  end-users.

         B.       Pricing.  The price of the support  program is 19% of the then
                  current,  pre-volume  discount,  Infocast  price of  purchased
                  software.  Infocast's ninety (90) day product warranty for the
                  initial  purchase  will  begin  on  August  1,  1999  with the
                  delivery of 300 CosmoCall  Agents.  All  subsequent  purchases
                  will include a 90 day warranty from date of delivery.

                  Maintenance  pricing  during  the year  2000 will be phased in
                  quarterly  as follows:  5% for Q1, 10% for Q2, 15% for Q3, and
                  19% for QA.  Renewal of the support  agreement  after the year
                  2000 will be by mutual agreement.

         C.       Payment terms.  Maintenance and technical support is billed on
                  the first day of each calendar quarter.

III.     Project Management and Professional Services

         A.       CosmoCom  will  designate a project  manager for the  Infocast
                  project. Project management will be provided by CosmoCom at no
                  charge through 1999.

         B.       Professional  services  provided by  CosmoCom  will be used as
                  agreed in advance  between  Infocast and the CosmoCom  Project
                  Manager  and will be charged on a time and  material  basis at
                  the prevailing published hourly rate, currently $225 per hour,
                  not to exceed $1800 per person per day, plus T&E.


                           All Prices in U.S. Dollars



         C.       After 1999, the Project  Manager  provided by CosmoCom will be
                  billable  on a time  and  material  basis  at  the  prevailing
                  published hourly rate,  currently $300 per hour, not to exceed
                  $2400 per day, plus T&E.

         D.       CosmoCom and Infocast will jointly define the requirements and
                  method for  interfacing  CosmoCall with third party  help-desk
                  applications like Willow's.

         E.       CosmoCom  will  load,  integrate  and  test  its  software  on
                  Infocast's  actual server platform in Hauppauge,  NY. Infocast
                  will   provide   this   server   platform   by  May  1,  1999.
                  Additionally,  Infocast  will provide an  identical  duplicate
                  hardware  platform  to be  retained  in  CosmoCom's  lab  as a
                  dedicated Infocast test bed.

         F.       In the interest of mutual benefit and continuous  improvement,
                  CosmoCom and Infocast will engage in a quarterly review of all
                  aspects of their relationship. This review will be attended by
                  the  project  managers  of  each  company  and by  appropriate
                  representation of the senior management of each company.

IV.      UNIX Porting

         A.       Porting Option.  Infocast's initial order of 300 agents is for
                  CosmoCall's   current  software  version,   which  runs  on  a
                  Microsoft  NT  Server  platform.   CosmoCom   understands  and
                  acknowledges  Infocast's  interest in having an implementation
                  of CosmoCall software that is based on a Unix platform. At any
                  time  following  the payment by Infocast for the initial order
                  of 300  CosmoCall  Agents,  Infocast  will  have  the  option,
                  exercisable within 2 years, to require CosmoCom to convert the
                  CosmoCall  software  to run in whole or in part,  as  mutually
                  agreed, on a Unix platform.

         B.       Port  Delivery.  CosmoCom  will  deliver the ported  Server to
                  Infocast for acceptance testing no more than 6 calendar months
                  from the date on which the option is  exercised.  The software
                  functionality  will  be the  same as  current  NT  version  of
                  CosmoCall at the time of delivery.

         C.       Pricing

                           (1)      Project  engineering fee: $350,000,  payable
                                    20%  on  exercise  of  the  option,  30%  on
                                    agreement to proceed after high level design
                                    review, and 50% on passing of ATP.

                           (2)      Purchase   Credit.   50%  of   the   project
                                    engineering   fee  will  be   available   to
                                    Infocast  as  credit  against  the  price of
                                    additional    CosmoCall   software   license
                                    purchases.

                           (3)      Ported Server and Live  Connection  Pricing.
                                    The same as that of the NT Version.

                           All Prices in U.S. Dollars



                           (4)      Migration  of Purchased NT Licenses to Unix.
                                    No charge.

         D.       Intellectual  Property.   CosmoCom  retains  all  intellectual
                  property rights to the ported Server and other software.

         E.       Development Environment. Infocast will provide CosmoCom, at no
                  charge, with the Unix hardware development platform to be held
                  by  CosmoCom  for  as  long  as  its  technical   support  and
                  maintenance  obligations  to Infocast  are in place.  Infocast
                  will  attempt to obtain for the  project the  cooperation  and
                  assistance  of Sun  Microsystems  if that is the  platform  of
                  choice.

V.       Software Source Code Escrow

         Infocast and CosmoCom  will develop a source code escrow  agreement and
         implement a source code escrow  program that will give Infocast  access
         to the CosmoCom  source code for both NT and Unix versions of CosmoCall
         under  reasonable  and customary  terms.  Infocast will bear the escrow
         cost associated with this program.

VI.      Publicity

         The parties  will  engage in joint  marketing  activities,  including a
joint press release,  joint seminars for end users,  preparation of white papers
and the like.  All such  activities  will be  subject  to the  approval  of both
parties.


Reviewed and Approved by:                   Reviewed and Approved by:


/s/ Michael J. Sheehan                      /s/ Stephen R. Karaesky
- ------------------------                    ---------------------------------
Infocast Representative                     CosmoCom Representative


CEO            4/21/99                      EVP        21 April 99
- ------------------------                    ------------------------------------



                           All Prices in U.S. Dollars