Old thread, Topmaster, Ashley is likely long gone, but...
I would beg to differ on turning off the router firewall, it's a better protection, and its that firewall you are opening ports in when you do a forward.
Windows firewall is not as safe, not the one I would rely on
As a qualified Tech, the windows firewall does not impress me, so even tho it nags and frets, turn it off.
If you have more than 1 net-connected PC, the router firewall will be protecting all from the ravages of the net, you really would only need the windows firewall if there is another PC on your LAN that you don't wanna trust, for whatever reason