I got this setup over the weekend. Then my N900 would auto connect to the Tmo MMS APN instead of the normal T-Mobile one. I tried renaming, even added a new APN with the normal settings. Still defaulted to the MMS APN.

So I switched the settings between the regular and MMS APN's. Renamed them appropriately. Now it's defaulting to regular apn. Worked out great.

Thanks frals for all the great work.