probably a simpple answer..

[Julian Elischer]

A frienn asked me "how  do I automatically sence what location my laptop 
is at and
make it use teh right WEP key without manual intervention".

I realised I didn't know..

is there a standard way to do this?
(I know my MAC does it so I guess it's possible).

example  :

laptop moved between home and office. different keys.
automatically connects in and runs dhclient  using the correct WEP key
depending on where it is when booted.