If you're starting from scratch, you might want to look at our Universal Login Script. It's code-free, fast, flexible, and virtually bulletproof. We just deployed it at a large financial company and reduced the GPO-based login drive mapping from a random 20-27 seconds to a consistent 4.3 seconds! Its written in Kix (closed source) but you can extend its capabilities with your own scripts, even using the internal functions and variables.

The "Administrators Toolchest" is a collection of free, Kix-based utilities that help system administrators manage their environments.

Glenn
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Actually I am a Rocket Scientist! \:D