http://www.backtrack-linux.org/wiki/index.php/Wireless_Drivers

I thought there was an updated list somewhere but I couldn't find it. This is the card I use, and it works great. http://www.amazon.com/Alfa-Wireless-Original-Screw-On-9dBi/dp/B001O9X9EU/ref=sr_1_1?ie=UTF8&qid=1331741935&sr=8-1

Cant help you there. In the link I provided they mention:

D-Link DWL-122 - using the mac80211 prism2_usb driver

They said that one does NOT work. You mentioned a similar model. Good luck.

What country are you in?

what about TPLink  wn727n Tplink tl-722nc  Tplink wn723n

You might want to check the Hardware Compatibility List (HCL) on the Backtrack website for cards that are P&P ready with BT5.

I know that Vivek Ramachandran recommends the Alfa card in his BT5 Wireless Pentesting for Beginners guide, but he specifically referred to the D-Link DWA-125 as an alternate so you might be safe going that route.

You're looking for a model which backtrack can support right? That is, a card that has drivers that are included in Backtrack? As I said, Vivek specifically mentioned the DWA 125 in his book so I assumed it meant that drivers for that unit came with BT5. However, looking at the list in the site below, I don't see it so I'm not sure what to make of that. Like cd1zz, I have the Alfa.

Here is a list of working cards for BT5:
http://www.backtrack-linux.org/wiki/index.php/Wireless_Drivers#Tested_and_working_cards

Personally, I think it's worth the effort get a unit that is on the list instead of getting a list of units and seeing if each one is or isn't supported. If you want to eliminate the risk/headache of getting a card that isn't supported, find some way to get the Alfa AWUS036H. Yes, it only supports b/g protocols but it's been proven to work well with Backtrack (or the other way around). That's why most beginners get it.

I was going to get the AWUS036HNR which supports N protocol but I'd read that the driver didn't support injection, which I think is pretty important. But it's a relatively new card and I didn't want to take the chance that it wouldn't work or had bugs. I especially didn't want to waste time searching/waiting for drivers/help if it didn't. So I got the AWUS036H.

It really comes down to what you're willing to accept. If you want to be assured of the unit working with Backtrack 5 right out of the box, get the Alfa. Mine did. If you're willing to accept some risk of a) having to download/install drivers b) searching help forums when it doesn't work c) wait for new drivers or bug fixes for existing drivers d) writing your own, then take a shot with a different unit.

one of the above links introduced D-Link Wireless G DWA-110 USB Adapter as one of the four recommended card which supported by backtrack 5 R1 what is your opinion about this card