You'll have to give the group a little more information concerning your
hardware and the wireless network configuration:

1. Laptop wireless hardware, "lspci" output in a terminal session.

2. Router configuration:
a. Is DHCP on?
b. Are you using encryption? If so WEP or WPA?
c. Channel?

3. Is Network Manager installed on your laptop?

4. Is the firmware installed for your card in "/lib/firmware/"kernel"/

5. Check that your hardware is supported and the wireless help
documentation here: <https://help.ubuntu.com/community/CommonQuestions>

Wireless hardware is a D-link PCMIA card and comes up fine ath0.
DHCP
Is and, and WEP is enabled. The card under ubuntu connects fine with the
router.
Using network manager, the connection here, as well as the neighbors show up
just fine.
It just isn't picking up the routers DSL Internet connection...

if you get a response when pinging yahoo at:

ping 216.109.112.135

Then no DNS server is being set automaticly.

You can manually set it in "/etc/resolv.conf. For example:

/etc$ cat resolv.conf
nameserver 192.168.100.1

If ping fails, then the Gateway is probably not set.

Type "route" and see if there is a default gateway address that is set
to the routers address (ie 192.168.100.1 in my case!)

You could use "route" to set the default gateway, but I am not sure of
the syntax right now. If all else fails disable or remove network
manager and configure the wireless via:

System - Administration - Networking.

Wifi-radar is an alternative for dynamic wireless connection and it
works better on many machines than network-manager.