> You should be able to ping the gateway no matter what because it is on the
> same subnet. Sounds like a hardware problem or maybe a cable problem.

No, he could ping the AP from the m0n0wall, cabling is ok.  AP to
anything else is unknown at this point.


> 
> I couldn't connect to the web config interface of the AP either.
> 
> The only settings I remember changing on the AP were the transmission rates,
> power and a few other settings related to the wireless side of things...
> 

What is the gateway on the AP set to?  You'll have to put something on
the same subnet as it to get to the web config.

-Chris