It's unlikely a registry cleaner would wipe out your entire system. What was the 
name of the program you used? There are rogue, rip-off registry cleaners. 

These instr. are applicable, so try this once you get a startup disk. It must be 
a ME startup disk. Boot with the startup diskette in the drive. Choose 'without' 
CD ROM support. 

At the A:\> prompt, type: SYS C: and hit enter. 
That will copy the needed system files to the hard drive to make it bootable. You 
should get a brief message, "system transferred". 

Remove the floppy disk from the drive and reboot by pressing Ctrl_Alt_Del. 


Blocking Unwanted Parasites with a Hosts File