Change local Admin password from AD

well the local admin account is for the machine not domain. you can telnet in if telnet is running on each workstation and change the account that way.

You can change the admin password with a VBS script and run it on startup via GPO to change it to another password. I have a script if you want it.

The script solution would be the best, If you want to do it through AD Users and Computers, right click each computer object and select manage
You also may want to consider adding a Domain Global group to the local administrators group on each workstation. This way in the future you can control who is a local administrator by adjusting the group membership of the domain group that you added to the local administrator group. The domain group can also be added to the local administrator group prior to imaging a workstation, so future deployed workstations will always include the dimain group

There's a utility called CryptPwd.exe that can change the local admin password for a remote machine.

It can be downloaded here:
http://www.jsiinc.com/SUBA/tip0300/rh0349.htm

cryptpwd -m \\ -P

You could set up a batch file to call this once for each machine.

You'll need to run this from an account that has admin rights to the target machine.

1st sen:
use scriptlogic advance feature to automate this....

2nd:
if you are using xp/2k and use terminal services and set rights to acces each pc remotely and reset pwd

or

user remote admin soft for this