Hello - My brother and I are purchasing a 1G or 2G (5 or 10 gig) iPod (used) for our Dad's birthday. He has a PC. I believe there was a 1G 5GB iPod made "after-the-fact" for PCs, and there were a ton of PC-formatted 2G 10GB models made. Are there any iPods that won't work w/ PCs? Will 1G 5 gig 'pods work on a Windows machine? How about 2G 'pods? Is there any way with any generation of iPod to use it on both a Mac and a PC? Also, if we get him an older iPod that was manufactured before iTunes was available for the PC, is he limited to MusicMatch Jukebox or is iTunes for Windows going to be "backwards compatible"? Thanks so much, N.