[The Plague of Death]

I always seem to get the registration error that was posted in another thread. I have uninstalled the demo, cleaned the registry, have gone in and stopped all processes from running except for explorer and taskmgr. I have also done this in "safe mode", and i still get the damn error.

System specs.
1.2 Ghz
256 MB RAM
38 G HD
nvdia gforce 4 mx 420 64MB
CD rewritable, and DVD rom (i tried installing in both drives)

Any help would be appreciated