Nimh

Hi there, we have 2 XP pc's on a basic network, one shares printer and a dial up connection to the other fine. We want to be able to fully access each others hard drives. (without sharing to other pc's if we add them to network) How is this done? Ive put the two users in administrators group on each pc but we dont have complete access for the drive. i.e When viewing in explorer we can see the drive but nearly every folder says permission denied. thanks for help