MOM 2005 consoles

I am having problem launching MOM 2005 consoles from my Windows XP PRo SP2 machine. It says
‘You do not have permission to connect to this MOM management server’.
I have checkt he permissions on the MOM server and I am a member of the MOM ADmins and the
Distributed COM Users.
I can login to another XP PC and login ok, it does not like my PC? I think its some sort of application or setting conflict, but don’t know what. Any ideas?