والله اخ نعيمات انا ما عندي ويرليس عندي الوصله السلكيه
ولكني احاول مع الشرح
هذا الشرح مش فاهمه

what you should modify is:
ssid="nuaimat"
set it to your ssid name

and
psk=cf9dfb6e499fc5607cb63a7c24 e90e47e67458dd73ba267fe20f8bed a90cb21c
set it to your PSK that you can generate from http://www.wireshark.org/tools/wpa-psk.html

if you want to know what you should modify
please seach google for '/etc/wpa_supplicant.conf'