Having this exact same problem, and have tried the pretty much all of the work arounds to no avail... Check the following link for a thread I used to describe my problems:
http://www.pchardwareforum.com/showthread.php?s=&postid=36818#post36818
In a nutshell, the problem really comes down to this one thing:
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q314859
I cannot figure out how to do what this article describes I am almost at a point where I don't even want to bother with RAID anymore if the standard IDE slots work...
