can you connect the BB Bold to MacBook Pro and use as 3G card etc? I'm thinking this would be great if I could just tell the MacBook Pro I have to use my Bold for internet when I can't get a wifi signal?

I'm on O2 by the way in the UK

So, uh, did you search at all? We've got a Mac section, with a Sticky at the top that has the instructions.

BlackBerryForums.com : Your Number One BlackBerry Community - View Single Post - Tethering Bold with Mac

You may also want to check out this link: TetherBerry | The Web Anywhere. I read they were coming out with a mac version.

Also confirm if O2 requires a tethering plan like AT&T. I think tetherberry gets around that somehow but I'm not sure. Before you get hit with a $$$ add on your bill, do some homework.

Regards-Michael G.