I don't know "everything" myself, but to subscribe to the channels your computer needs to be in one of these following countries:
Algeria, Bahrain, Chad, Djibouti, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Mauritania, Morocco, Oman, Palestine (including the Gaza Strip and the West Bank), Qatar, Saudi Arabia, Somalia, Sudan, Syria, Tunisia, United Arab Emirates or Yemen.
To get there without a plane ticket, you need to do some tweaking to your IP address so that your internet traffic is routed through one of the above countries. This can be done by using a proxy.
This here be how a proxy works, yarrr:
You can use a free proxy - my experience is that it's hard to find decent ones with enough speed to give you a nice flowing river.
Or you can pay for one, like
http://www.hidemyass.com/ - there are many to chose from I believe.
Any of the house nerds want to add anything? I haven't actually tried much of this myself, so I might be way off here...