Instructions:
Get the software from here:
http://support.microsoft.com/default.as ... 5&SD=MSKB&
Install the software as a new hardware device (Add New Hardware) using the advanced install wizard to point to the .inf
Change these registry keys
HKLM\SYSTEM\CurrentControlSet\Services\Ramdisk\Parmeters
DiskSize change to 01F00000 (32505856) (Keep in mind that you DON'T have to sacrifice 32 mb of your ram. You can set it to anything you want to as long as its now over 32 mb)
HKLM\SYSTEM\CurrentControlSet\Services\Fastfat\Start
Start change from 4(disabled) to 1(system)
Reboot
The only limitation is that the drive can only be 32MB in size.
Tweak written by or based on information submitted by Guy Goodenough