I recently had the same/similar problem. In my case, I was getting a Serious Error 0x00000050. My problem had something to do with virtual memory on XP Home.
Here are some notes I put together as I was trying to resolve this. The first page outlines the steps I took to resolve the problem. The remaining pages are just stuff that I found poking around on the net while researching the issue.
EP, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS