The only one I know of that might help you is RememberTheMilk.. the MilkSync app will sync the BB wirelessly with your web based stuff.. downside is it's $25 a year to do that, every year and you have to keep your tasks on the web.
There's another rememberthemilk app that is free, but I have never tried it.
I can't post links, so do a google search for "bbrtm" and "milksync", the former is hosted on google's code site, and the latter is hosted on RTM's site.
(I wish Thinking Rock did this too, which is what I use.. it's already a Java app. Sigh!)