HOW TO: Get wireless (Intel 3945ABG) working in Ubuntu 8.04 (Hardy Heron)

Problem:
The wireless card seems to be switched on but it does not not pick up any networks and is essentially useless.

Solution:
1. Open a terminal

2. Input the following:

$sudo modprobe -r iwl3945
$cd /etc/modprobe.d
$gksudo gedit iwl3945

3. In the blank file enter the following:

alias wlan0 iwl3945
iwl3945 disable_hw_scan=1

4. Save the file and close it

5. In the terminal:

$sudo modprobe iwl3945
$sudo ifconfig wlan0 up

Wait a few minutes and hotspots should start showing up.