(snagged from a TigerDirect page about a Flash Drive they were offering)
Adding system memory (typically referred to as RAM) is often the best way to improve a PC's performance, since more memory means more applications are ready to run without accessing the hard drive. However, upgrading memory can be difficult and costly, and some machines have limited memory expansion capabilities, making it impossible to add RAM.
Windows Vista introduces Windows ReadyBoost, a new concept in adding memory to a system. You can use non-volatile flash memory, such as that on a universal serial bus (USB) flash drive, to improve performance without having to add additional memory "under the hood.
Now, if this "ReadyBoost" is able to use Flash Drive memory like RAM, that would be so cool ... and cost-effective as a gig of RAM rarely dips below fifty bucks (and is often much more, especially if you're updating an older system), when you can get a 2gig FlashDrive for twentyfive bucks or so!
Interestingly, the product that had this blurb on its web page (it was for an anti-virus program that comes pre-loaded on a little tiny flash drive that snaps into a "credit card" when not in the computer) is itself not compatible with Vista-64!
I guess I'm not the only one with a "wait for the SPs" attitude towards Vista ... right now TigerDirect has a deal on their "business" machines: get them with XPpro now, and get a free upgrade to VistaBusiness "whenever you want to" ... which I guess would be "when it works with my stuff". Of course, XP had some issues like that, The Girls have a number of games that worked great on W98 but would not run at all in XP ... go figure.