I did all steps,which was writed at topic "My wireless doesn't work - a primer on what I should do next".
my wlan card is Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
But on 4th step linux say me,that:
wlan0 IEEE 802.11g ESSID:""
Mode:Managed Channel:0 Access Point: Not-Associated
Retry min limit:7 RTS thrff Fragment thr=2352 B
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
and on 5th step:
wlan0 Interface doesn't support scanning : Network is down