3G sim and mobile broadband

I am going to Botswana for 2 months and want to get a 3G sim for my blackberry and a mobile broadband dongle for my laptop. can anyone tell me where is best to get it from and how much they will cost?

You could try Orange, MTN or Mascom as they are all good and I think they all got 3G for the BB units.

Good luck and do not forget to visit Chobe National Park and the Okavango Swamps.

Cheers