Do a search on the backtrack forums on
wpn11.
You will get 5 hits including the 4 you posted on.
Read the one that is specific on the wpn111.
One poster stated that there are no drivers for this unit.
The WPN11 is a USB dongle, correct? I believe an atheros chipset.
Usually, this chipset is handled by the Madwifi drivers in Linux, but it does not support USB yet, as far as I can tell. So, some tried ndiswrapper, which uses the native Windows drivers to set up the driver for Linux. If you do not have good Linux knowledge, then this can get tricky to set up. Netgear does not have Linux drivers and the native drivers are set in an exe file that needs to be extracted in Windows, or taken from a Windows installation.
On the
Backtrack wiki this card is not listed as supported/ found to work by users.
There is another unit that is listed, the NetGear WG111T which has the same chipset. Read this section and get the idea of how complicated it may be to get it working.
If you have security set up on your wireless system, then you also need to set up the ESSID and WEP/WPA key. Understand that in Windows, either the Netgear utility, or Windows itself will prompt you to set up security to the router, if it is present. You need to do the same in Linux.
Bottom line, is that this card has very limited support in Linux, as there are no native drivers available.
In terms of Backtrack, I do not use it, so my help would be limited.
If you decide to tinker with this to get it working, thats great! But, I will not provide further information unless you assure me that you are using your own wireless connection, not trying to use a connection that a neighbor is paying for, as you noted in the BT3 forums.