How to pretend to browse from a different country?
Solution 1:
you can use tor proxy to browse internet anonymously. Check this link for more info: http://maketecheasier.com/install-tor-in-ubuntu/2010/07/06
Solution 2:
Vassilis, in order for your computer to be registered in another country you will need a computer in that country. For instance watching the BBC iPlayer can be done by having a computer in UK and paying the TV license (obviously). It helps if you're a resident who is visiting abroad as a home address makes this easier.
The best method I've found of using a proxy is the ssh tunnel method which is documented here: http://embraceubuntu.com/2006/12/08/ssh-tunnel-socks-proxy-forwarding-secure-browsing/
This assumes you have a computer in the target country of course.
Solution 3:
If you use Firefox you can go to Add-ons - Extensions and download and install an extension Hola Better Internet and after it is installed you will see its icon in the upper right corner. Click on it and choose country you want to vpn to. Done.
Solution 4:
In short, your internet connection IP address already identifies you to a specific country. In order to look like you are coming from another country, you need to contact another computer in the country you want to be seen as, and FROM THIS computer, launch the actual connection to the targeted service. The service has to see that the source IP address is from the right country.
Usually, this means that you either use a service such as TOR that will redirect your connections from all over the world, or have a computer in the right country, that you can completely control, or at least that you control enough to launch another connection from it. TOR might be your best bet.