Hey, whaddya know. Got a whole slew of errors on Test 5. From what I've read, getting lots of errors on this test is not always just a sign of bad RAM. It can also signal an incompatibility between the RAM and the MB, especially with AMD Via chipsets. I'll have to do some musical DIMMS and see what happens.
Interestingly, When I upgraded from my original 256MB, the system wouldn't boot with 2 512MB DIMMS. So I returned one and combined the other with my current RAM. Perhaps the problem was related. I might want to investigate available BIOS updates too. Also, Jay's suggestion below about SB cards and via chipsets may warrant attention.
Anyways, thanks for the tip.
Welcome to the future!!!