Even though USB ports are backword compatiable, I'm not sure if Lexar component are, because what you got is USB 1.x (see the detail on this link)
http://www.gogocity.com/product_deta...id=CO02MEM0228
And your computer has 5 USB 2.0 ports, See detail:
http://www.walmart.com/catalog/produ...904#long_descr
see if you can get the latest driver for Lexar drive from thier web site (even though they say that you don't need a driver),,, I bought a Lexar JumpShot cable and sure as hell I used it only few times,, It would lock my Win2k system and I had a hell of a time to get it working with my laptop.
cheers