The best possibility would be for everyone to attain an external IP address from your internet provider. It may cost an extra $5.00 per month in some cases. After you have the new IP address then configure it with your router and use DMZ mode which will allow games to work through this port.

That change nothing for me. Ty anyway.

Here's a helpful hint if you are having trouble hosting. Go to Start on the task bar, click on it. Now click on Control Panel. Now click on System and Security. Now click on Windows Firewall. Now on this page upper left click on (Allow a program or feature through Windows Firewall), scroll down to the bottom of Allowed programs and features. Make sure there is a check mark in front of Wizard2008 and a check mark in the box Home/Work (Private) for Wizard2008. If Wizard isn't on the list then click on Change Settings, then click on Allow another program... and add Wizard2008 to the list