Windows 2000

I installed Win2000 on top of my window98 os. Things were fine after this step. I accidentally install Client 32 for win95/98, this is when things start to go south. When I reboot, I got a “Winlogin.exe” application error box. Here is the actual error message:
“The instruction at “0x1000204f” referenced memory at “0x1000204f”. The memory could not be read” “Ok” to terminate program
“Cancel” to debug the program.

I went in under safe mode and uninstalled the client. When reboot I still have the same problem.

Any suggestions or recommendations as to how I can get my system back the way it were before the client installation?

Thanks,