One of the premier smartphones that was used to show off the new Windows Phone 7 platform in its infancy was the Dell Venue Pro. The combination of the full AMOLED touchscreen and vertical slide-out QWERTY keyboard, in addition to a 1GHz processor and 720p video recording capabilities, had WP7 early adopters salivating over what the platform and the device could do. The phone is sleek, black overall with chrome trim and has scratch resistant Gorilla Glass. Overall, a very professional-looking device if you ask me. And let’s not forget the attractive WP7 platform filled with Microsoft Suite capabilities that will ensure your Word Documents, Excel Files, PowerPoint presentations, and Outlook email (and XBox Live profile when you’re ready to close up shop) syncs effortlessly with your mobile device.

Once the Venue Pro hit the streets, it was only available on the T-Mobile network and exclusively from Dell. Now, AT&T has decided to make the device compatible on its network. Now, AT&T customers will be more than happy to snag the Venue Pro and give the WP7 platform a spin.

You can pick up the Dell Venue Pro on a 2 year contract for only $99 bucks ($500 unlocked). I checked AT&T’s website and it doesn’t list the device, so if you are thinking about giving it a try, it looks as if the Venue Pro is still being sold exclusively via Dell’s website.