I third this.

SMF has compatibility with Windows mobile where just the forums are loaded in a generic style.

Maybe you can check if VB supports this.

- Dotty.

EDIT: Googled Vbulletin Windows Mobile...and got a shit load of Windows Mobiles forums powered by vbulletin. So don't waste your time. Vbulletin forums would be a better solution, but they secure all their shit to the customers.