Khertan, you seem to be in France and thus i have a question for you...
Is it true that now all the 1-13 wi-fi channel are activated in France or are you still stuck with 10-13 ?

Here it says yes to 1-13 channels with power limits on the 10-13 ones:
http://fr.wikipedia.org/wiki/Liste_des_canaux_Wi-Fi
http://fr.wikipedia.org/wiki/Wi-Fi

But all the other docs i could find (mostly cisco, and home routers manufacturers) says the contrary (only 10-13).