I'm not sure you read the directions for using Driver Verifier.
Once you engage it, it will continuously give you a BSOD...you have to disengage it to get the system to boot normally. I've used it once or twice and I'm sure I made the same mistake regarding disengagement.
To disable the Driver Verifier, start your system in Safe Mode, which will bypass most device drivers, thus preventing Driver Verifier from going into action.
Once in Safe mode click Start|Run, type
in the Open box and click OK. This will disable Driver Verifier and allow the system to boot normally, you can then replace/update the offending device driver.
Troubleshooting this isn't going to be easy, as you are finding out
FWIW, IMO: WMIACPI.sys is a Windows file that seems to be installed with SP2. If it's damaged, I suspect that the only thing that might cure it...would be installing SP2 or SP3.http://www.bleepingcomputer.com/filedb/wmiacpi.sys-7763.html
If it were me, I'd simply do a repair install of XP, using my Microsoft XP CD and license.