Here is my question. I have a laptop and I run a ruby/rails based web
brick server which serves up html pages. I have emailed people a way to
access this webserver through a URL that looks sort of like:

 http://201.120.126.203:1000/

I could be at a public library on a wireless connection, and as long as
my web server is running, people can get to my website. I figured out
the url through ipconfig. However, now I have a wireless router in my
condo, so my laptop is wireless through the router. The url I used
before doesn't work, and of course ipconfig shows a generic intranet or
whatever ip address for my local area network. Is there anyway I can
still have someone get to my website on my laptop ?

I suppose I could unplug the router and plug the laptop in if I want to
show someone something particular, but the cable modem seems to take a
while to reset and doing it like that of course is kind of a pain
anyway.