I will do it over this post because I hardly use MSN anymore, anyways if you got more trouble then contact me over PM for my MSN
First download apache
Install and restart computer
Apache should auto start
Now go to C:/Local Disk/Apache/WWW
put your website in there
now go to Start->Run->CMD-> type "ipconfig" without the ""
now get your default gateway.
Put that into the webbrowser of your choice and login
Portfoward the 80 tcp and 8080tcp
Now go to
www.whatismyip.com and get your wan ip
put that into the browser to test to see if you see your website (etc..)
give it to a friend you trust and see if they can see it.
best luck