Ok, I ran ipconfig and it gave me a totally different ip. So what now?

From what I know I'm not, but I don't know much. Everytime I go somewhere and check my IP, it's the same. WTF is a proxy? Well, I know what a proxy is, but how do I know if I'm behind one?

So, I'm trying to run Jestcast and I read in their forums about your port scanner tool. When I scan my port, I get this: Reason Given: Connection timed out More about this error: This means that you are most likely behind a firewall, this error esentially says that you and your computer aren't there...