I'm thinking about getting a new iPod, and the thing that _was_ clinching it for me is that, in addition to its primary function (music, of which I only have about 5Gb on my computer), I can use the remainder of the memory to back up the data on my iBook (w/ only 18Gb HD). But the thing that's suddenly REALLY appealing to me is the possibility that I can use it to transport large-ish files (more than one CD's worth, say ~2-3Gb) between home and my work computer. At work they make me use a PC w/USB only (no firewire), but it accepts devices that conform to the USB 'mass storage device' standard. Will the iPod work this way? I mean, should I expect to be able to plug it into my work PC with the USB cable and have it show up as a 'drive' on my desktop?