Ok...
Code:

  
  IF INGROUP('mallory.local/Mallory/LONGUP') 

    addprinterconnection('\\mcsrv\LongCSR')

    addprinterconnection('\\mcsrv\LongFC')

    setdefaultprinter('\\mcsrv\LONGCSR')

ELSE

  ? 'NOt in longview'

ENDIF

seems to work, I was using double quotes.
I'll tinker with this some more, see what I can come up wtih.
Thanks Les.