TTIUWP as they say ... so here goes and hopefully this will help
http://www.aoaforums.com/frontpage/i...sk=view&id=292
A nice guide to getting XP running on the Nvidia Serial ATA ports. Another quick point, try the drives on the ports that are number sequencially - i.e put 1 on SATA port 1 and the other on SATA port 2.
Hope this helps