BlackBerry Coming

Well, the company I work for is providing us with BlackBerries and AirCards. I'm kinda looking forward to the BB and definately the AirCard. I only want to carry one device and am kind of concerned about not having the functionality I enjoy with my Treo. I have a lot of different applications that I use for different purposes. Some that are free and some that I bought. I am concerned about having the applications I need avaliable on the BB. But it will give me a chance to learn another device, so we'll see what happens.