Can't connect to network (wireless)

Hello, I have a Dell Vostro 1500 with an Intel pro 3985 wireless card. The driver that comes with the latest kernel is installed. Running lsmod shows iwl3945.
ifconfig wlan0:
wlan0 Link encap:Ethernet HWaddr 00:1C:BF:99:B1:DE
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
The wireless card seems to be working, since it detects the network when I run iwlist wlan0 scan:
wlan0 Scan completed :
Cell 01 - Address: 00:0D:72:4B:2E:F9
ESSID:"2WIRE208"
Mode:Master
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=96/100 Signal level=-32 dBm Noise level=-127 dBm
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s
Extra:tsf=0000000022a51dd3
When I run iwconfig wlan0 essid 2WIRE208 key ********* and dhclient -d wlan0 I get:
Listening on LPF/wlan0/00:1c:bf:99:b1:de
Sending on LPF/wlan0/00:1c:bf:99:b1:de
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 17
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
I also tried doing it with netcfg2 and using the following configuration:
CONNECTION="wireless"
INTERFACE=wlan0
SCAN=yes
SECURITY=wep
ESSID=2WIRE208
KEY=**********
IP="dhcp"
TIMEOUT=30
Running netcfg with the conf gives me: DHCP IP lease attempt failed.
Can anyone help me find out where I'm going wrong and how to fix it? I feel like I'm doing everything right, but nothing works and most of these tools are horrible in telling me what went wrong...

The problem has to do with the dhcp server not on the computer but on the router side.  The router dhcp server is not handing out an address, either because you don't have a dhcp server (or maybe it is not enabled in the router) or because there is a limit on the number of simultaneous users ie. there is a maximum of 2 dhcp clients and you are trying to be the 3rd.
Hope that helped

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