You have to order Vonage from the U.S. - and have it shipped there. Maybe Aramex could get it delivered here, but I wouldn't count on it.

Basically you sign up for Vonage and they send you a small modem-esque box that's the size of a few pieces of sandwich bread. You plug your computer and your phone into it and - voila - you have a U.S. phone number where you can make and receive calls.

The downsides are:
(1) When the internet is slow then the calls are choppy
(2) When Qtel tweaks the settings for VOIP then it's impossible to make calls
(3) I have not been able to get it to work as a modem for my fax, but I could be doing something wrong
(4) Pretty sure you need a U.S. credit card
(5) The Vonage box runs on 110V, so you need to hook it up to a small transformer
(6) You cannot forward it to your cell number. . .well, you might be able to, but you would incur US to Qatar cell phone charges, which would be punitive.

The downsides are very small, though - having Vonage ROCKS.

good luck!