1 EXHIBIT 10.20 ROVAK, INC. AMENDMENT TO AGREEMENT AND PLAN OF MERGER The undersigned SHAREHOLDERS, ROVAK, INC. ("ROVAK"), RI ACQUISITION CORPORATION ("RIA") and INFOCURE CORPORATION ("INFOCURE") have entered into an Agreement and Plan of Merger ("Agreement"). WHEREAS, the parties wish to amend the Agreement. NOW, THEREFORE, in consideration of the mutual promises herein made and of other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 1. Paragraph 2.8(a)(i) is amended by substituting "$100,000" for "$1,402,500". 2. Paragraph 2.8(a)(ii)(1) is amended by substituting "2,705,000" for "1,402,500". 3. Paragraph 2.16 is modified as follows: (a) Subparagraphs (b), (c) and (d) are renumbered as subparagraphs (c), (d) and (e) respectfully. (b) The following is added as subparagraph (b): (b) The Aggregate Consideration shall be increased ("Additional Earn Out") based on the actual net operating profit (net income before interest and taxes) of Company or its successor for the twelve month period ended January 31, 1998, as follows: Actual Net Operating Profit Additional Shares of InfoCure --------------------------- ----------------------------- $500,000 to $549,999 None $550,000 to $750,000 Such number of shares of Common Stock equal to the quotient of (i) the product of 6.25 times the amount of the actual net operating profit in excess of $550,000 but less than $750,000 divided by (ii) the price of a share of Common Stock pursuant to 2 the Public Offering ("Additional Shares") 4. Except as herein specifically provided, the parties hereto reaffirm the terms and conditions of the Agreement. IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the ____ day of July 97. INFOCURE CORPORATION By: --------------------------------------- Name: ------------------------------------- Title: ------------------------------------ RI ACQUISITION CORPORATION By: --------------------------------------- Name: ------------------------------------- Title: ------------------------------------ ROVAK, INC. By: --------------------------------------- Name: ------------------------------------- Title: ------------------------------------ SHAREHOLDERS: ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ 2 3 Name: ------------------------------------ [SIGNATURES CONTINUED ON FOLLOWING PAGE] ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- ------------------------------------------ Name: ------------------------------------- 3