Cisco 1300 AP

I currently have my wireless on my laptop connecting to my Linksys
wireless at home just fine.

I'm having problems connecting to my works Cisco 1300 access points
(while at work). I've changed the ssid, and set to the correct channel,
and set the correct encryption key, but i'm unable to get a dhcp
address. When I hard code the IP address, i can enable the device, but i
have no connectivity. I can't even ping the router "default gateway"..

Any ideas??

Thanks,
HVY