Witopia.Net VPN is extremely popular throughout UAE. Full access and VoIP. they have instructions for vonage they will give you if you ask them but skype works best and they recommend it. they only charge 3-4 dollars a month. they are at http://www.witopia.net
You can try a VPN service. I use http://witopia.net, but there are others too that might work. a vpn encrypts all your data so they can't see what you're doing. but..like other posters are saying, maybe you should wait until you're home.