[ubuntu] wireless driver problems

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http://ubuntuforums.org – so i was following this guide trying to setup my wireless driver http://www.aircrack-ng.org/doku.php?id=compat-wireless and at the end i type sudo modprobe "driver-name"... i tried inserting iwl3945,mac80211, and other drivers instead of driver -name but with no success... when i do and iwconfig i see no listing of wlan0 anymore... i think i messed up badly can anyone help me fix this ?? :cry: (Hardware)