Hmmm... I'm gonna have to take a look at Howard util since it can find even if account name has been changed... but also take a look here for doing it one at a time.

I'm going to probably be doing it soon against about 1,500 systems. If they have a service account running with a given local Administrator account and password, oh well. I guess they'll have to call the Helpdesk to fix it.

Kix script to change Admin pwd on remote PC's