I have a VOIP phone, (cost from Ebay, £3-21 + £7 p&p) which works with Skype, X-pro, Stana Phone, SJ phone, MSN, YAHOO Messenger, Net-2-phone, Eyebeam, Firefly, etc.
The phone allows you to make unlimited worldwide computer to computer calls for free. This means you can phone any country for as long as you wish across the world at no cost (apart from your internet fees)
You can also use Skype to phone a landline and you are charged the cost of a local call of the country you are calling.
I use mine to call England and am charged less than 1p per minute.
Crabbit