Network Printing Sharing Access

Printer Sharing Access
My Office have two printer, each is connected using P2P networking with one printer connected to XP PC and the other Window 2000 PC. For some reason, all PCs connected is able to use the printers one or the other except one which is Window 2000 base that cannot access to the printer connected to Window 2000 PC but is no problem accessing the XP connected printer. This only happen after we done a reformating on that particular PC. The system can detect the printer but when we try to access, it show “Access denied, unable to connect”. So can anyone there help to solve this problem?