Hi.

Here are some outputs after i installed the driver for the wireless adapter (WUSB54G
Wireless-G USB Network Adapter, driver is from ralink site)

#iwconfig

iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

sit0 no wireless extensions.

rausb0 RT2500USB WLAN ESSID:"sedat"
Mode:Managed Frequency=24.12 MHz Access Point: 00:14:A95:6D:60
Bit Rate=54 Mb/s
RTS thrff Fragment thrff
Encryption key:1234-5678-90 [3]
Link Quality=0/70 Signal level:-182 dBm Noise level:-256 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

#iwlist rausb0 scan
rausb0 Scan completed :
Cell 01 - Address: 00:14:A95:6D:60
Mode:Managed
ESSID:"sedat"
Encryption keyn
Channel:1

ESSID should be sedat and Encryption is WEP and WEP key is 1234567890 are the things that i know.

And here is the output of dhclient rausb0 after i run it ifconfig rausb0 up

sit0: unknown hardware address type 776
sit0: unknown hardware address type 776
Listening on LPF/rausb0/00:12:17:a3:7e:49
Sending on LPF/rausb0/00:12:17:a3:7e:49
Sending on Socket/fallback/fallback-net
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on rausb0 to 255.255.255.255 port 67 interval 13
No DHCPOFFERS received.
No working leases in persistent database.

Sleeping.

whats wrong?

For some reason it isn't connecting to your DHCP server. Some distro's include an ifup script that calls DHCP. You might give that a try and see if it works better (ifup rasub0). Another alternative would be to set a static IP address with ifconfig:

ifconfig rausb0 xxx.xxx.xxx.xxx

You would then need to do two additional things. First, you need to use route to set the gateway to your router's IP address:

route add default gw yyy.yyy.yyy.yyy (where the yyy are replaced by your router's IP)

Second, you need to edit /etc/resolv.conf to include your ISP's DNS servers. For each DNS server you add a line:

nameserver zzz.zzz.zzz.zzz (replacing the z with the DNS IP addresss).