wireless question

[dep]

greets, folks!

i am hoping to do a little bit of wirelessness here, largely -- no, 
entirely -- so that my wife can take her notebook machine out of her 
office and up by the fireplace (it was several degrees below zero 
here again this morning). problem is, i already have a nice hardwired 
network set up here, the lone purpose of which is to firewall and to 
give all the machines internet access via the cable modem. i am not 
especially eager to move everything to wireless.

what i'm wondering, then, is whether it's possible to use one of the 
existing ports on my router, put a wireless box on it, put a wireless 
pcmcia nic in the notebook, and have it all work. and, if so, whether 
there's any special trick to making it work. it seems as if this 
ought to be okay, but it might also be that there would be some sort 
of dhcp collision or something, by chaining a wireless box (router, 
right?) after another router.

ideas?
-- 
dep

http://www.linuxandmain.com -- outside the box, barely within
the envelope, and no animated paperclip anywhere.