Network Printer Problem

I have two epson cx43 series printer on my office network and they are both shared by the client computers (WIN98 & WINXP(it is the print server))... the problems are the printing is delayed and it prints unwanted characters. I installed the drivers properly... but i think there is a virus its name is bugbear it resides at the print pool/spool says "mcaffee" i already deleted it and it still messing up my print jobs??