I think you can ... I know somebody who's got the "IQ" or "Q" or some smart phone like that from verizon and she does.
Yes you can!!! I just paired up my BB8900 to my Macbook...very excited. I can now work during my entire vacation since I won't have to drive to the local donut shop to hook into their wifi. The surf, the corona, and excel spreadsheets...ah, almost heaven. The T-Mobile/Blackberry specialists walked me through and it took only about 15 minutes to be up and running using a bluetooth connection through my phone.
bare in mind the huge costs associated with using the data plan of you're mobile with a PC.