Drak.
Yes Qatar is all 220V. You may run into 110V outlets in some of the hotel rooms for your electric shaver etc but other than that, 220V is standard.
Outlets are type G. Here's a pic: http://www.kropla.com/!g.htm
However, you can buy adapters almost anywhere that can accommodate most types of plugs. They're inexpensive, I've found them as cheap as 2 - 3 QR.
Good Luck.