Oracle Database Express Edition (XE)

Hi All

I have XE installed on a Windows XP Home PC. It runs like I'd hoped, very fast and I've developed an app I'd like to demo. In order to release this to the world I have done the following and yet I still can not see this from outside. Any help greatly appreciated!
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<li>My (wireless) router has been altered to lease my IP address for 30 days (If I change my IP addrsss to fixed, I have to mess about with DNS severs etc)

<li>On the router, I've set up port forwarding for port 80 to the IP of the PC with XE on it

<li>In XE, I changed the port to 80 a few weeks ago

<li>In XP, I have right clicked on the wireless network connection icon and selected Properties>Advanced(tab) and then settings: I am then presented with the Firewall Form. On exceptions for the firewall I added a port called "Web" and set the port to 80 and finally on the advanced tab, then I clicked on Advanced and selected the wireless network, clicked settings and then added "Web Server" which was already there.
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I'm not sure if there is something else I need to do?
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Thanks in advance

Phil