I picked up a used computer for my mother in law. P4 1.7 mhz 512 mb ram 40 gig HD $140 I allready had a 17' flat panel that was not being used. so this is a big step up from her windows 98 and whatever outdated hardware is in that machine. So the only issue (not that big of a deal) is that it is not usb 2.0. Can I upgrade some how? Is this a harware or soft ware thing?