Can I use my Blackberry Curve as a modem for my notebook?
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.
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.
bare in mind the huge costs associated with using the data plan of you're mobile with a PC.