Lost_luggage34,
Glad to hear you are all set now.
As for the RAM, two things:
1) With WinXP it really likes 512Mb of RAM to run.
2) If you want to give the two sticks a try, go to Page 33 of your Motherboard Manual. In there it talks about setting both DIMM Slots to Normal and Settting the SDRAM CAS Latency to 3. That should let you use two sticks at the higher CAS setting.
Take Care,
Richard