There are 3 users on this computer I'm using, but I am the only one who can use the Windows live messenger. The other two haven't been invited so they can't use it, they can only sign in on regular msn 7.5. So I thought I would install both msn 7.5 and the new beta.........can't do it. Anyway I can get round this? I would send them invites but I've sent them to others already.