Welcome to LQ!
I think we'll need a few more details before any conclusions can be drawn:
- How are you setting the WEP key?
- How are you trying to get an IP address?
- What is the output of iwconfig?
- What is the output of ifconfig?
- Can you connect to your home network if WEP is temporarily turned off?
After some fruitless searching someone told me that I have my 'Roaming' turned off.
With all due respect, "someone" probably is a touch out to lunch.