brental

I have 3 computers A, B and C, connected with a linksys router. A and A are running xp pro and C is runnin xp home. A and B can usualy browse each other by name and always by ip C can see B but cannot see or ping A A can ping and access C by ip but not name The only computer that has a firewall is C but that is turned off that that computer can be reached fine. The problem is C cann't see A and A is the one with that has ever thing on it and none of the computer can browse the network.