I have only used my ipod on my ibook. What I would like to do is use my ipod to transfer some files/data (not music) from my mac to pc as a backup. On plugging my ipod into my PC will it just appear as a drive? What do I need to be able to do this? Please explain. Thanks.

You're going to have the problem of format. Windows/Mac format. There's another topic floating around here discussing about which format works which ways.

As far as Windows goes, it will appear as an external drive in My Computer.