LLigetfa,
The answers to your questions:
- we have 1 NT4 PDC and 2 NT4 BDC
- we have 1 NT4 TS & 1 Windows 2000 TS
- both the TSs are part of the domain

On the Windows 2000 TS the script executes fine but on the NT4 TS it only executes the UsrLogon.cmd script.