Just look up the top of the page, click on LimeWire (Cross Platform). Now you'll see the different sections. Go to Connection Problems.

If all you have is the XP firewall (you didn't tell me), you'll find instructions for configuring it. You'll need to find the name of your router, not the adapter, as Grandpa & LOTR asked you in your earlier threads. You can search the forum (top right) for SP2 patches... there are a couple. Yes, LW does work with SP2.

Go & read that sticky, sort out your firewall & UPnP if your router supports it & see how you go