Adding on to lasereth,
the reason you can't use SD-RAM is that it's 168 pin which is slightly shorter than modern DDR-SDRAM which is 184 pin in socket size.
If you try to stick some old sdram on the board it won't be long enough to fit in the memory bank.
Reasearch your board for it's needs for CAS latency and such and get an approptiate temp memory stick. Go with a generic stick of DDR333 (2700) from
Tiger Direct for around 29.00 for a stick of 256mb after rebate.
Lasereth does have a point that if you have patiance it will pay to hold of on the system build until you can afford your preffered memory since giving a clean install with everything you need is always more healthy than trying to get windows to go faster with a memory upgrade.
It's the great mystery of MS. After setup, it gets a lot harder to see the gain's of adding new hardware to an existing system. We're all sill hoping Bill will explain it to us one day
