My friend's son is headed to Oslo and other parts of Norway for 10 weeks.

I explained the magic of 900-1800 mHz and the whole of Europe.

I suggested getting an unlocked 900-1800 mHz GSM phone from a local Chicago retailer www.welectronics.com/gsm.shtml

But I'd like some suggestions from those that have purchased prepaid SIMs in Oslo.

How much should it cost?

Which carrier is preferred?

Where should the SIM be purchased?

Thanks for your help.

BTW, I could use the answers to the same questions for my trip to Paris next month.