CGI Holding, the parent of RTP-based Internet and search engine marketing firm WebSourced, is making another acquisition.

CGI said Thursday it had signed a letter of intent to acquire New York-based Morex Marketing Group. Morex operates a web site (www.Babytobee) targeting expecting parents.

CGI, which is changing its name to Think Partnership, said it would pay up to $42 million in cash and stock for Morex, based on earnouts and pretax income generated by Morex.

Lloyd Ecker and Robert Moore, co-executive officers of Morex, will continue to run the operation once the merger is completed, CGI said in a statement.

CGI is parent of Websourced, MarketSmart Advertising, which is based in Raleigh, and other subsidiaries.