i use niswrapper to load the tl-wn321g of tp-link,it 'ok(i see the message of dmesg)

[17179590.716000] ndiswrapper version 1.31 loaded (preempt=yes,smp=no)
[17179590.888000] usb 4-1: reset high speed USB device using ehci_hcd and address 2
[17179591.108000] ndiswrapper: driver rt73 (Ralink,09/07/2006, 1.01.03.0000) loaded
[17179591.688000] IBM TrackPoint firmware: 0x12, buttons: 0/0
[17179591.976000] wlan0: ethernet device 00:14:78:7a:e9:97 using NDIS driver: rt73, version: 0x0, NDIS version: 0x500, vendor: 'IEEE 802.11g Wireless Card.', 148F:2573.F.conf
[17179591.976000] wlan0: encryption modes supported: WEP; TKIP with WPA, WPA2, WPA2PSK; AES/CCMP with WPA, WPA2, WPA2PSK
[17179591.976000] usbcore: registered new driver ndiswrapper

i use iwlist to scan the access point,
ty@tonylinux:~$ iwlist wlan0 scan
Cell 02 - Address: 00:14:78:C1:E1:C2
ESSID:"TP-LINK"
Protocol:IEEE 802.11g
Mode:Managed
Frequency:2.437 GHz (Channel 6)
Quality:15/100 Signal level:-86 dBm Noise level:-96 dBm
Encryption keyff
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s
48 Mb/s; 54 Mb/s
Extra:bcn_int=100
Extra:atim=0

and the wireness network satus is that:
wlan0 IEEE 802.11g ESSIDff/any
Mode:Auto Frequency:2.412 GHz Access Point: Not-Associated
Bit Rate:54 Mb/s Tx-Power:20 dBm Sensitivity=-121 dBm
RTS thr:2347 B Fragment thr:2346 B
Power Managementff
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0


even i use the command "iwconfig wlan0 mode managed",the mode is also
auto,just like above.any setting to this card make the status of this card no changes,like "iwconfig wlan0 channel 6" and so on,and the status of this card is also like above,why?

so i don't know how to let the card work,who can help me???thanks

Have you tried "ifconfig wlan0 up" after doing the necessary configuration to the card using iwconfig?