You can find that in \\EnterTheNameOfYourDCHere\Netlogon or \\EnterYourDomainHere\netlogon. Both folders are basically the same. The domain version ensures that you get the stuff from the domain controller that is closest to your location or has the fastest response time at that moment.
The login.bat file will most likely start the kixtart script.
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Mart

- Chuck Norris once sold ebay to ebay on ebay.