Login Script for Global Groups

I’m administering an NT PDC and I have clients logging into the domain with a script. Unfortunately, all members apply the same script, no matter what group they belong to. I would like to know if there is a way to have a script execute only if you are part of a certain group. Is it intuitive to NT 4.0? Do I need a utility, and if so, what is the utility?

Thank you,
Metin Kale
metinkale@photo-depot.com