Launch VBScript in a Logon Batch Script

An example of a batch file Logon script that launches a VBScript program is as follows:

@echo off
wscript %0\..\NetLogon.vbs

The "%0" in the batch file is interpreted by the command processor to be the name and path of the current file, which is the batch file itself. The string "%0\..\" then becomes the folder where the batch file is stored. The batch file above will launch the VBScript program NetLogon.vbs as long as it is saved in the NetLogon share with the batch file. This syntax is preferable to a UNC path, because it does not hard code the name of a Domain Controller. The syntax will work no matter which Domain Controller authenticates the user. The logon script will work no matter which Domain Controllers are available or where in the network the user logs on.

Reference: http://www.rlmueller.net/index.html