How to get my computers IP address

[Mitja Podreka <mojdebian@gmail.com>]

I have ADSL connection which I share over a router and Apache server 
installed on my laptop running Debian Sarge. Before I started to share 
ADSL connection I sometimes used the server to share bigger files with 
my friends. I told them the URL of the file based on my current IP and 
they could download the file directly from my computer/server.
But now the IP I get from myip.com or from syslog file is the IP of the 
router. Is it still possible to share files as I used to and how can I 
do it? Which is my computer's IP now?

thanks for help.
--

Mitja Podreka
http://mitja.kizej.net