the first tool looks promising!
will download this tool for future attempts, thank you phil!
i used a very similar one last week to change a vista password with a weirder error and in fact i couldn't fix it this way because it was a damaged user(wrong name in two places, system error), i had to modify admin user and password to log in and do everything form there
do you remember the administrator password? if you can't remove that password in the SAM file because it is a 64 bit version, then load the administrator account and edit from there what you can