For those still working with XP machines, and willing to boost up the cache.
I use eboostr, see http://www.eboostr.com/
I use a part of the installed 2 gig ram for the program, and it made XP rocking

It works with an usb stick or SD card to, but it is much faster to use internal memory (if you have 2 gig, XP uses max 1.5)
You can use the trial to see if it works for you.