Ok, I finally got the 737NG working this morning. All is better and even spent a full 2 hours learning the FMC :D God that thing is sweet...Anyway, I'm having a bit of a problem with it and Squawkbox 3 now. It seems that with the PMDG I can't connect to any VATSIM servers. I get "Unauthorized Software Client". However, it isn't the server. I can connect perfectly fine to the network using the Kittyhawk or POSKY models, or any other model for that matter.I'm using the latest version of FSUIPC...3.48 or something like that. -Matt Biegner

Matt - Have you checked the SB3 forum for hints on solutions? www.squawkbox.caCheers,

No, nothing over there seems to cover this type of problem. :?

i'm flying with the pmdg 737-700 at least once a week on vatsim and have no problem. you sure you have the latest SB3 version? (3.0.3)You could even try connecting in another aircraft and then switching... Luca