Hi, please do not make changing unless we ask you too because it will make it much harder if not impossible to get your wireless working.
make sure it looks like this:
gksudo gedit /etc/modprobe.d/iwl4965.conf
Then add swcrypto=1 and it will look like this:
options iwl4965 11n_disable=1
reboot, if it still does not work properly then copy and paste this command in the terminal (ctrl+alt+t) please:
options iwl4965 11n_disable=1 swcrypto=1
It will download a script and create a file named wireless-info.tar.gz in your home folder with wireless information so we can see the condition of your wireless at this time and the Mac address, WPA key and WEP key are removed for your security, then reply back, click on the paper clip and attach the wireless-info.tar.gz file as a zip file.
wget -N -t 5 -T 10 http://dl.dropbox.com/u/57264241/wireless_script && chmod +x wireless_script && ./wireless_script
If you do not have ethernet either then follow the directions at this link for running the script without internet.