GDI.EXE Help

Try to start Win98SE..after splash screen.

Message of Error Loading GDI.EXE Must Reinstall Windows

I have tried the fix that microsoft offers...no help

Also once in a while when I reboot I get a message about VSDATA95.VXD from which i understand is Zone Alarm..which I have uninstalled a long time ago.

I can't boot in safe mode..nothing. I can only get to the command prompt. 1) Is there any Registry Editing Software able to run in DOS mode? 2) Is there anyway to resolve the GDI.EXE without reinstalling windows?
Help is much appreciated. Thanks in advance