I added a local user to the right groups. When using that loginname, everything works well.
I do not understand why I cannot connect as a user from an other domain (it works with win2000) but ...
I am experiencing some problems using the MQSI software. I connect to my computer (win2000) with a username from a trusted domain. I added this domainusername to all the groups (mqm, mqbkrs, et ...