WICD cannot find wireless network

[052d]

because network manager cannot find my wireless card, i switch to wicd.
at first it works, i can use wireless network with it.
but soon wicd appears cannot find wireless network.
i use iwlist scan, it appears:

laptop:~$ iwlist scan
lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

irda0 Interface doesn't support scanning.

eth1 Failed to read scan data : Resource temporarily unavailable

i use iwconfig, it appears:

-laptop:~$ iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

irda0 no wireless extensions.

eth1 IEEE 802.11b ESSID:"TP-LINK" Nickname:"Prism I"
Mode:Managed Frequency:2.437 GHz Access Point: 00:0A:AB9:96:1E
Bit Rate:2 Mb/s Sensitivity:1/3
Retry short limit:8 RTS thrff Fragment thrff
Power Managementff
Link Quality=28/92 Signal level=149/153 Noise level=107/153
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

please help me.

[Alldan]

first write your wireless setting in network administration tool then setup wicd (put your security encryption key in advanced settings and check automatically connect) then reboot