Using Kixtart logon scripts

Message dialog boxs during user logon do not show up in Windows Vista yet it
XP they show up with no problem. The logon script is running and every once
in a while I see it for a second. Is there any way to remove the Welcome
with the Spinning cuusor just after a user logon? This is as far as I can
tell covering up the logon message. OR anyway to make the message come up
above this?