I think PC133, PC100, and PC66 are all SDRAM, and not FP or EDO at all. They may share the same package (DIMM), but are different enough that they won't play nice together. It may be worth your while to buy a new mainboard and processor (along with the RAM) than to buy the stuff you need for the Vetix: http://www.crucial.com/store/listmodel.asp?cat=RAM&mfr=Micron+PC&productline=Vetix&submit=Go >>> dd-b at dd-b.net 08/07/02 12:46PM >>> This system really *needs* more memory. Running PostgreSQL and Apache and mod_perl and HTML::Mason, and I see swapping starting to happen just when the performance suddenly drags horribly (15 seconds to serve a page sometimes.