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                                                                    EXHIBIT 99.4

                                     [LOGO]
                        DATA SYSTEMS NETWORK CORPORATION

                                  PRESS RELEASE

              TEKINSIGHT.COM SIGNS LETTER OF INTENT TO ACQUIRE DATA
                          SYSTEMS NETWORK CORPORATION

Farmington Hills, MI., January 20, 2000-- TekInsight.com (NASDAQ:TEKS), a
provider of advanced Internet and e-commerce products and solutions, and Data
Systems Network Corporation (OTC BB: DSYS), a leading provider of enterprise
services, today jointly announce that they have signed a letter of intent for
TekInsight.com to acquire Data Systems Corporation.

The letter of intent details the conditions to the completion of the
acquisition. The proposed transaction calls for Data Systems to be merged into
Astratek, Inc., a wholly owned and principal operating subsidiary of
TekInsight.com (the "Acquisition"). In consideration for the Acquisition, Data
Systems shareholders will receive a number of shares of a new class of
TekInsight.com convertible Preferred Stock proposed to be listed on the NASDAQ
Small Cap market that will have a market value of between $12,500,000 and
$18,000,000, with such value to be based upon the market price of TekInsight.com
Common Stock at the time of the Acquisition closing. The Acquisition will give
TekInsight.com access to additional Fortune 1000 clientele, a sales force and a
help desk which will be critical components to rolling out the Company's
proprietary XML based products and services. This network of accounts and
relationships including 16 state and local government agencies accounted for
over $54 million in sales last year. The Acquisition Agreement will be subject
to the usual and customary conditions to closing, including due diligence
investigations, authorizing votes by the shareholders of TekInsight.com and Data
Systems, satisfactory "fairness opinions" addressed to each of TekInsight.com
and Data Systems and execution of a definitive Acquisition Agreement. Although
no assurances can be given, the parties intend to close the Acquisition by May
31, 2000.

"TekInsight.com has been using its resources to develop the technology and
methodology, especially around XML, to build robust, scalable e-commerce
applications, capable of sustainable high-volume transaction rates. It is now
time to expand its roll out to the marketplace. Data Systems brings an
infrastructure capable of supporting a $100 million organization and a technical
group experienced in Internet and Intranet technologies. In addition, Data
Systems's core business of serving state and local governments should provide us
with a receptive clientele for our e-commerce capabilities," said Alex Kalpaxis,
Director and Chief Technology Officer of TekInsight.com.

"While Data Systems has been involved with Internet and Intranet projects for
its clients, TekInsight.com's technical capabilities will allow us to provide a
total enterprise solution in the e-commerce marketspace," said Data Systems' CEO
Michael Grieves. "TekInsight's superior development capabilities in the Internet
and e-commerce arena, along with Data Systems' enterprise management,
applications development and network services will address a wide range of our
clients' technology needs. This will allow our clients to leverage the
investment they have previously made in infrastructure with the latest
e-commerce technology. We have already begun working with TekInsight.com in
addressing a few selected clients' Internet requirements."

ABOUT TEKINSIGHT.COM
TekInsight.com is a world-class XML Internet technology developer and software
engineering company. . The company's proprietary products include various
web-based diagnostic software agents and web-based e-commerce performance and
analysis tools. TekInsight.com is currently using this expertise to build highly
scalable web-based e-commerce/portal sites. For more information on
TekInsight.com visit www.tekinsight.com.

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ABOUT DATA SYSTEMS NETWORK CORPORATION
Data Systems Network Corporation, the Computer Associates 1999 New Business
Partner of the Year, has more than 13 years of experience providing strategic
technology solutions to Fortune 1000 companies and over 16 state and local
government agencies. The company provides a wide range of services, including
Applications Development, Network Services, Enterprise Management, Help Desk and
Security Services. To learn more about Data Systems Network, please call (248)
489-8700 or visit the company web site at www.datasystems.com.




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Forward Looking Statements
This press release contains certain forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933, as amended, and Section
21E of the Securities Exchange Act of 1934, as amended, which are intended to be
covered by the safe harbors created hereby. Investors are cautioned that certain
statements in this release are "forward looking statements" within the meaning
of the Private Securities Litigation Reform Act of 1995 and involve known and
unknown risk uncertainties and other factors. Such uncertainties and risks
include, among others, certain risks associated with the closing of the
transactions, government regulation, and general economic business conditions.
Actual events, circumstances, effects and results may be materially different
from the results, performance or achievements expressed or implied by the
forward-looking statements. Consequently, the forward looking statements
contained herein should not be regarded as representations by Data Systems
Network Corporation, or any other person, the projected outcomes can or will be
achieved.

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CONTACT: MICHAEL JANSEN                       CONTACT: ALEXANDER KALPAXIS
         DATA SYSTEMS NETWORK CORPORATION              TEKINSIGHT.COM
         (248) 489-8700                                (212) 271-8520
         (800) 544-2086                                ALEXKALPAXIS@ASTRATEK.COM
         MJANSEN@DATASYSTEMS.COM