I second Tom:badblocks and memtest86 are what I use and works great on all kinds of hardware. You don't even need a specific OS for memtest86 because you can make a bootable floppy and test any old piece of hardware it recognizes.
Terry -- Terry Fielder terry@xxxxxxxxxxxxxxxxxx Associate Director Software Development and Deployment Great Gulf Homes / Ashton Woods Homes Fax: (416) 441-9085