Macbook + PC + PS3 + Networked Hardrive??

Alright so I got a 1tb hardrive that I recently formatted as a Fat32 (compatible with ps3) I was wondering if I can network it with my Airport extreme and have it work on my Macbook my girlfriends PC laptop and my ps3?

Also I don't know much about Fat32 but I read somewhere it can't access filies over 30gb or something of that nature, does this mean if I a folder that I put my movies in it can't exceed 32gb?

I've never heard such a thing. FAT32 doesn't support individual files larger than 4GB, but there shouldn't be any limit on how much data is stored in a folder. Maybe you were thinking of the Windows 2000 disk formatter's 32GB volume limitation.