This is probably a good place to start.. all of their content developer guides based on version of the browser:
BlackBerry - Product Manuals and Guides
This should give you a good start on your wrapping issue as well as what fonts you can use.
Another thing you may want to do is make sure you have an entry for the blackberry for your mobile controls:
Livelink - Redirection
As well there is an interesting KB article on ASP.NET device profiling
Livelink - Redirection