|Against forum rules?? Horse Manure!!!|
Open the box and remove the hard drive from the problem computer, change the jumpers and slave the HD into another computer and search for a SAM (with no extension) file (ignore the SAM.log, you just want the SAM file).
The one you want is in the D:\WINNT\System32\config. Delete the file and put the HD back in the original box after you change the jumpers back to master.
When you boot it up there will only be Administrator available and the password MUST be left blank.
After you get it all done you will have to create the users over again, but that's simple.
This is from an old post of mine from 04.
Embrace paranoia, they ARE out to get you!