Microcenter is giving 4gig thumb drives away with a card in the mail w/2 coupons.
In vista there is a feature that allows a USB to be added to ram called readyboost. In order to get non-compliant drives to work, look here:
http://www.thinkdigit.com/forum/showthread.php?t=53634
here is how to do it on xp
http://www.mstalkonline.com/xp-hack-readyboost-with-any-usb-device/
