Ramdisk is the best I've seen. I posted a copy of the NT version for somebody not long back. I cannot get the autosave feature to work on mine. Some people think running Seti from ram will speed it up, but it doesn't do much. Best thing it does is let you turn your hard drive off without affecting Seti performance. It can speed up other things though - for instance putting swap files into ram helps Photoshop big time, but you need lots of ram. I only use that feature on my main desktop with 1 gig of ram. Just do a search for ramdisk 98 or NT (the same company offers both versions) and you'll find it.