Whether the Speedtouch needs port forwarding depends on the model & whether its connected via usb or ethernet.

If you're on a lan, remember only one port can be forwarded per computer. So if you have more than one LW connecting it would need a separate port no. Not a major issue really but just you need to be aware & prepared for that.

A sensitive question! Do you feel you need SP2. SP2 reduces simultaneous connections. There's M$ & 3rd party patches fixes that work for some people. But the most effective I've heard is to uninstall SP2.