I'm pretty sure that the RAM is good, as it had been working well in my own PC for quite a while, up until a couple of weeks ago. I updated to 2 sticks of 1GB and transferred the 4 512s to the rebuild.

Edit: The following is found in the BIOS:

WDC2500AAKS-OB3A0
LBA Bode Supported

LBA/Large Mode - Auto
Block(Multi-sector transfer)M - Auto
PIO Mode - Auto
DMA Mode - Auto
Smart Monitoring - Auto
32 Bit Data Transfer - Auto

Using the XP Pro setup CD, I deleted the partition created with Acronis Disk Director and did a quick format of the drive.

I have tried installing with the original XP setup CD, a slipstreamed XP CD with SP2, and a slipstreamed XP CD with SP3. Each one chokes during the transfer of files to the SATA drive.

I have a 40 GB ATA HD that I'm going to try and see what happens. (Can I put XP Pro on a 40 GB HD?)