H, did it start crashing following Win ME installation, ie had it been fine previously (under a different OS)? Or is it a new machine which has only "known" ME?
I had fairly severe problems with one of my PC's earlier in the year - would have been easy to put down to software however it turned out to be a hardware problem. As is often the case with trying to get to the root of problems with complex equipment (ie computers & software / firmware) the best approach is to try and trace back when things started to go wrong and then look at what changed at that time. In my case it was a memory extension however the distinction was blurred by the fact that several other changes had been done around the same time.
It may also be helpful to know some details about what actually happens in your case (run up events, etc).