First off give me some more information so i can help you out better.
What bittorrent client are you using and what version is it?
Do you have DSL or CABLE?
Are you using a Router and Modem or a modem alone?
What is the brand of your modem\router?
Does your computer have a lan ip address or an internet ip address:
click the start button then "all programs" then "command prompt".
Now in the command prompt window type "ipconfig" and press enter
Now what does it say your IPv4 address is? (please only post the first 2 set of numbers for your own protection. the number is in the x.x.x.x format)