I have a lot of old computer accounts that that I need to remove out of active directory. What is the quickest way to find and remove these accounts. I've seen scripts with utilize nltest.exe, but ...

There's a program called cat that can search your domain for you. I believe hyena also has this type of tool, if you want to go the supported route.

The Active Directory Module for Windows PowerShell, which is included with Windows Server 2008 R2, can be used to perform password and account search operations against Active Directory Domain ...