BT3 final has a few minor issues with our driver that are fairly easy to circumvent and I wanted to share my solutions here. This is a collection of notes and ideas I have put together from my time here and first and foremost I want to thank the community because everything I'm putting here I found from various posts in these very forums.

I would also like to ask you to please remember this is a howto for the RaLink RT73 USB Enhanced Driver. Please keep the discussion in this post relevant and don't ask for support for mundane BT3 tasks.

Now lets begin. Its a good idea to grab a couple things before we get started. The first thing you need to do is get the BT3 kernel sources (thank you shamanvirtuel for delivering me from my noobedness)
and after that you will need the previous version of the aspj driver. (SV yet again infinitely wise)

After you have what you need and you are in BT you can bring down your current interface and driver with
Code:
ifconfig rausb0 down

modprobe -r rt73
Then you wanna navigate to your folder with the kernel.lzm and type
Code:
lzm2dir kernel.lzm /
afterward you can go the the driver folder and
Code:
make

make install
now you can bring up the driver and interface with
Code:
modprobe rt73

ifconfig rausb0 up
At this point your wireless card is ready to be put to good use. Iwpriv commands and SpoonWep will now work gloriously! If you are looking to crack wep/wpa with our card use SpoonWep or look here for a tutorial on how do do it with the terminal, if you are looking to connect to a wep encrypted AP use wireless assistant, and if you are trying to connect to wpa/wpa2 use these commands.
Code:
ifconfig rausb0 up
iwconfig rausb0 mode managed
iwconfig rausb0 essid <Your SSID>
iwpriv rausb0 set AuthMode=WPAPSK (or WPA2PSK if you are using WPA2) *WPA2PSK is for this line only
iwpriv rausb0 set WPAPSK=<Your Key>
iwpriv rausb0 set EncrypType=TKIP (or AES)
dhcpcd rausb0
This has worked very well for me and I hope it works for you to. Good luck.