OS 10.3 Networking & Mounting Hard Drive

I’m using 1 G5 and one G4 Mac. I’m trying to setup file sharing between both. All configurations have been double checked and verified by Apple. I’d like to have the hard drive of one be available on the other desktop. Tech support at Apple leaves a lot to be desired. Running a peer to peer ethernet network. Nothing fancy. I can get “drop boxes” etc but impossible to let one see the others hard drive like in OS9 or XP. Strange OS. All suggestions appreciated.
Thanks,
aszunick@yahoo.com