Thanks for your quick reply. Just to confirm, seeing I only need to run a single URL could I do the below?

Code:
IF @USERID = "Sysadmin"
goto end
ENDIF

IF INGROUP("Dir-entry-check") = 1

run "c:\Program Files\Internet Explorer\iexplore" http://hww-kingsweb/secure/directory/authenticate/autotest.asp

ENDIF

:END
exit