Instructions/Downloads for Windows XP Users
Now to get this driver from Airopeek to work, goto your windows driver system directory (c:\windows\system32\drivers) and create a copy of your current Ethernet card Driver for a backup.
Then rename the new driver you just downloaded from Airopeek as the same name of your current Ethernet card driver. You can find this by going to your hardware Device Manager and looking up the current driver name and location.
Then copy that new file into the driver directory replacing the current driver. Since you've made a backup, if any goes wrong you can restore the copy. Reboot your computer for the new driver to take effect. The reason we have to 'trick' the computer in this way is because Windows for some dumb reason doesn't want you to be able to change what driver your hardware uses at will.
Airopeek should now work if it's going to with your card. Otherwise consider buying a compatible wireless card.
For some reason my copy of Airopeek would not work until I also downloaded two more DLL's, which I easily found on the internet. So we're going to just put the following in your Airsnort directory.