Also, it could be that you have a router that is behind a firewall. If you do, you are going to need to forward the ports for Bittorrent (6881-6999) on your router. If you don't know how to do this, just tell me what kind of router you have (D-Link, Linksys, etc.) and the model number and I'll give you a step by step guide on how to forward the ports. Hope I could help.