Thanks!

The article outlines the basic steps I had gone throught to try to repair the installation, and of course when that failed, to go back and reinstall it each time. The author did mention something that might be helpful;

http://www.informationweek.com/showA...leID=185301251

But I don't know if that covers the whole scope of the problem. There is one other factor for a cause, but doesn't seem to occur immediately before the crash each time. An A3**.sys wireless driver from D-link ocassionally locks up the PC with a blue screen, (shuts Windows down to avoid damage message, etc.), requiring a cold start. That appears either as the drive is filling up, or when the PC is sending or receiving a lot of data over the network.

Another factor is that this is an older PC certified for 98', upgraded to Me, and then Win XP.

So I still can't be postive about the cause, but the complete reinstall will get everything working again.