Internet connection for notebook via P800 GPRS

I am able to use my P800 to surf the Internet using the Opera browser that I
have installed on the phone, via GPRS.

I am also able to connect my notebook to the P800 using the USB cable that
came with the phone.

My next trick is to somehow get Internet access for the notebook using the
GPRS on the P800. I presume this is possible, and it would be a good way to
obtain Internet access for presentations on my notebook rather than having to
beg for & configure a dial-up line.

Anyone know of how to do this or a website with details? In particular my
problem is really how to set up the notebook I guess.

Dave

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