A BB is not a Nokia. They are different devices and you cannot make your BB do the things the Nokia does and vice versa. If you re not willing to try out the BB fully, then my advice is return it for a new Nokia. You won't be happy until you do.

What do you need the device to do? We cannot give any suggestions on software without an idea of the other problems you are experiencing. The BB is great as a business tool. Email is great. I assume that you have a BB data plan. Calendar, contacts, tasks and memos are adequate for most.