Well, pim-sync works with what other programs besides outlook. you say you doubt theres any issues with windows xp/vista/7, what about linux and OSX.

Mainly all i will be doing is sharing files amongst my desktop (win 7) my phone (n900 maemo), and the netbook (dunno yet). and syncing contacts between my phone and the netbook, and maybe calender etc.

I also want to share SNES roms between all 3, so that i dont have different saved games on each computer.