USB - Linksys' WUSB54GC worked well for me (but doesn't support wireless N)

PCMCIA - Netgear had some that worked well

I haven't see the link posted (maybe I missed it,) but you'll find good info here:

http://www.aircrack-ng.org/doku.php?id=compatibility_drivers

That should give you at least a starting point for aircrack compatible cards.

'Some' of the Linksys models work.  You need specific models / versions, to make sure they have the right chipset.

I can't speak for every card on that list (I didn't write the list, and it's more of a community effort.)  But like I said, you need to ensure, if you're testing it, that the model and revision are the same. rev 1.1 of a card might have a suitable Atheros chipset, where rev 1.11 changed it.  The list is sometimes VERY specific.  You might also have to load extra modules to make a card work.

If you want help with a specific card, I'd suggest posting specific info (all details) of it, and we can look into it.  But without the card, in hand, we can't test it to confirm it works, unless one of us has that exact card.

Good luck, keep trying, and let us know card details, and we'll try to help further.

i wanna buy one of this cards:

1-D-link DWA 110
   Chipset: Ralink
   Driver: RT73

   Comment about the driver: Driver available from manufacturer:  http://www.ralinktech.com/support.php?s=2 , or works with daily cvs rt73 drivers http://rt2x00.serialmonkey.com/rt73-cvs-daily.tar.gz, just add {USB_DEVICE(0x07d1,0x3c07)},\ in rtmp_def.h
  
   MAC Range : 00:1E:58
   Vendor Id: 0x07d1
   Product Id: 0x3c07
   FCC ID: KA2WA110A1

Ralink makes some nice b/g chipsets, and has been very cooperative with the open-source community to release GPL drivers. Packet injection is now fully supported under Linux on PCI/CardBus RT2500 cards, and also works on USB RT2570 devices. However, these cards are very temperamental, hard to get working, and have a tendency to work for a while then stop working for no reason. Furthermore, the RT2570 driver (such as that for the chipset inside the Linksys WUSB54Gv4) is currently unusable on big endian systems, such as the PowerPC. Cards with Ralink chipsets should not be your first choice.

http://www.backtrack-linux.org/forums/showthread.php?t=12452

2-Tp-link tl-wn722n V 1.8
   Chipset: Atheros
   Drriver:  ath9k_htc Support in kernel

   comments about the driver: Atheros and Zydas USB 802.11n cards. The rest of atheros chipsets excluding the ones mentioned and MIMO series as well as fullMAC (these are rare, only found in embedded devices) should be supported.

   Comments about the chipset: Windows. The latest madwifi-ng patch makes it possible to inject raw 802.11 packets in either in Managed and Monitor mode at arbitrary b/g speeds.
The madwifi-ng compatability list is an excellent way to determine if a card is compatible with the aircrack-ng suite. Atheros, the chipset manufacturer, also has a web page that enables you to lookup chipsets for products incorporating their designs.
http://www.backtrack-linux.org/forums/showthread.php?t=48211


3-Tp-link tl-wn821n v3.1
   Chipset:Atheros
   Driver:   ar9170usb    Driver in mainline kernel since 2.6.30.

   http://www.backtrack-linux.org/forums/showthread.php?t=47717

4-Linksys WUSB600N v1
   chipset: Ralink    
   Driver: rt2870 Driver included in mainline kernel since 2.6.29

Hayabusa thanks for helping me again. and i wanna tell you something else i want to use the card with backtrack 5 R1 live cd and
i am new on backtrack i hope i can work with D-link and Tp-link becuase they are chiper then Linksys!!!!!!

Firstly that i found a dlink dwa 510 pci adaptor and its awsome i have no problem now. And i already know that alfa card is great as i mentioned before i cant buy alfa coz of some problems