Windows ME on a corporate network? Shudder.

I really have to wonder why you're so obsessed with squeezing every single bit out of KiXtart and the associated scipts? Have you checked how much other network traffic you're generating by e.g. regularly updating Winodws-based computers?

Also, an intelligent network design will enable you to host e.g. login scripts on computers in the local network. Additionally, by paring down the login scripts to the essentials that are to be performed during a login process you'd most likely get better savings. Anything not directly related to login processes should be moved into centralized admin scriptsa that make configuration changes remotely.
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There are two types of vessels, submarines and targets.