EXHIBIT 4.5 Generation Capital Associates 1085 Riverside Trace Atlanta, GA 30328 Tel 404/303-8450 Fax 404/255-2218 Via Fax: 803-736-7735 January 13, 2004 Mr. George E. Mendenhall CEO Integrated Business Systems and Services, Inc. 1601 Shop Road - Suite E Columbia, SC 29201 Re: December 24, 2003 Securities Purchase Agreement Dear George: This is to confirm that we have agreed that the Closing Date as defined in Section 10 (c) of the above referenced purchase agreement is January 6, 2004. Accordingly, the 30-day period to file the GCA Registration Statement, and the 120-day period for the GCA Registration Statement to become effective, are February 5, 2004 and May 5th , 2004, respectively. Sicnerely, /s/ David A. Rapaport - ------------------------- David. A. Rapaport Executive Vice President And General Counsel cc: Steven Scott