No central server, this is at college. Most of the users have their comps set to share stuff with no password required, but I always get a pop up that asks for workgroup and log in and stuff, also I have no idea how to share things like some TV shows I downloaded before the big BT scare (this is Canada, totally legal, and most of us I have cable at home but there's no chance of us getting TV out at school).
Anyway it's just a bunch of comps connected via a big hub network. And a DHCP server... somewhere. What's the best way to share files with the PC users?