Logon scripts via VBScripting

Good day Guys.

I need to sample code to find a user's "Primary Group" and use that variable to map a drive.

To get even deeper into it. I need to then find a phrase in this variable and if so map it somewhere else.

I hope my question makes sense.

You need more info on my setup:
AD running on w2k server
Mostly w2k and few win98 workstations.
The logon script is currently to long and the script should cut out 80% of the if statements.

Thanks