Chris,

That's great glad to hear it worked...(Ruud said it would).

It would fail if you tried to query against a specific server that was not a Domain controller.

i.e IF INGROUP("\\MYSTANDALONE_MEMBERSERVER\TESTGROUP")
? "Found User"
ELSE
? "User Not found"
ENDIF

On NT/2000/XP it would be possible to find membership, but Windows 9x would not be able to.