I realized I hadn’t posted this one answering a newsgroup post this morning. The attached script will iterate through a list of workstation names in a text file, ping them, and if the ping returns then reset the local administrator account password to whatever is defined at the top of the script. This is pretty basic and would potentially need some customization. You might want to adapt it to iterate through an OU or set of OUs instead and get the computer names from there, or perhaps set different administrator passwords on the machines.
Feel free to leave any questions/comments/etc in the comments box below and I’ll take a look.