I have extracted the cab files from the oem folder c:\windows\options\cabs etc;

I have completed setup /nd to reinstall windows

I have done a scanreg /restore and restored the oldest registry (one I thought I had before the problems occurred - I am limited to 5 at present as I hadn't change the max to keep to anything greater.

I have even (desperation) copied explorer.exe from another machine (obviously to no avail)

Please help
Desperate