I hate to tell you, but unless they've figured something out in the past month or so, it isn't TMo or AT&T compatible. The Droid Pro detects what country you're in, and if you're in the USA country code, it defaults to CDMA only (and it doesn't look like that can be changed, even after rooting it).
Please refrain from editing the OP in your marketplace items. You can alert a mod like myself or any other and we'll update it for you. You can also reply asking a mod to update the OP for you within the reply and we'll do it.
7) You may not edit a listing once it has been posted. This is to prevent users from changing the details of a listing during or after a transaction. If you have updates to add to your post, you may add them as a reply in the thread, but under no circumstances are permitted to edit the original post. Anyone found to have edited a post and changed the transaction details could be banned at moderators discretion.