[ubuntu] Re installing wireless driver and setup in ubuntu 10.04

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http://ubuntuforums.org – Hi , couple of months back i tried optimising my wireless network for speed and entire lost the wireless setup (i mean wireless connection is not working). How do i reinstall wireless driver and setup... $$ lspci | grep Network 04:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) thanks fido (HowTos)