I'm currently helping my neighbors set up their new iMac, 27". They own an old PC that a friend built, and it runs Windows XP. The iMac came yesterday, and I was helping them get started with it this afternoon. In order to transfer data like their iTunes library, photos, etc., I took over an Iomega external HD to use. However, the PC wouldn't detect it. I used the USB cord supplied with the drive, in several different ports on the PC. The ports do work, as an iPhone I plugged into them was detected. I then tried the supplied FireWire cable, no dice there either. No recognition on the PC whatsoever. So I went back to my house and got my other hard drive, a LaCie Starck. Plugged it in to their PC, no recognition. I formatted both drives as MS-DOS (FAT) with Disk Utility, and that did nothing. So I went to burning DVD's. I popped one in, and proceeded to use iTunes' backup library function to burn their library to the DVD. I inserted the blank disk, and then iTunes showed that it was 'Checking media" up in the top of the application for 60 seconds or so, and then the Apple logo replaced that and nothing else happened. I'm out of ideas here. What do I do to get this information over to the iMac? Why are my drives not being recognized? I'm quite confused.