> Please follow exactly these steps:
>
> iwconfig wlan0 mode Managed
> iwconfig wlan0 essid <YOUR_SSID>
> iwconfig wlan0

exactly the same as before:

wlan0 IEEE 802.11b ESSID: <set correctly>
Mode:Managed Freq:2.417 GHz Access Point: <AP's MAC>
Bit Rate: 11 Mb/s Tx-Power: 26 dBm Sensitivity=0/3
RTS thr: 2432 B Fragment thr: 2432 B
Encryption key: off
Power Management: off
Link Quality:53/100 Signal: -62 dBm Noise: -96 dBm
RX invalid nwid:0 Rx invalid crypt: 0 Rx inv. frag: 0
Tx excessive retries: 0 Inv. misc:0 Missed beacon: 0


> What kind of WLAN card, (make, model and version), are you using, since
> you use ndiswrapper?

WALN card: Pentagram Hornet PCI WIFI Lite
Chipset: Realtek 8185
(rtl8180-sa2000 driver hangs the system; Realtek's Linux driver for
8185 hangs the system too).
Kernel: Fedora Core 6, 2.6.18.1, recompiled to enable 8 kB stacks
(before it would hang with ndiswrapper too).
ndiswrapper v. 1.31

When systems starts, I have one failure:
- starting HIDD: Can't open HIDP controlsocket: Address family not
supported by protocol
I don't know whether it's anything important.


> BTW: So far, this looks more like a driver, wireless tools or association
> problem, not a DHCP problem.

What wireless tools?
But iwconfig shows the card sends and receives, and it detects the
available networks.