I've ended up with Regseeker as my main registry tool; I've benn happy with
it for quite a time.
I've never used a registry tool, but I wonder whether any of the
available freeware tools would help in the following situation I just
experienced:
I installed a Logitec mouse on my laptop's serial port just to test
the port, as I had problems with some other serial hardware.
Win98SE recognized it as a Logitec, and asked for the Win98 CD.
The laptop has no internal CD-ROM, and I didn't have the external SCSI
CDROM installed, so I just clicked on 'skip'.
Windows found and used the generic mouse driver, and the mouse worked.
HOWEVER, the next time I powered up the laptop, Windows refused to
boot, because it couln't find lmouse.Vxd which apparently was
referenced in either the registry or system.ini.
I searched the two files, and found the Registry entry, but didn't
know how to edit it to fix the system. Happily, I was able to access
the Win98 CD on my desktop, find the missing files (Windows also
required lmouse.drv too), copy them to floppy and write them to the
system directory on the laptop in safe mode to get the laptop working
again.
One of the more bizarre things that's happend to me in Windows!