No such thing.
Edit: Now that I think about it, that was a piss poor answer. Totally true, but piss poor.
First off, you need to learn what an IP address is, and then you will see why.
Read this: http://support.wrq.com/tutorials/tutorial.html
And then this: http://support.microsoft.com/default.aspx?scid=kb;EN-US;q169289
Don't worry about the technical stuff, just try to understand the concepts on those pages. Then when you're done come back and ask some more questions (because you will have some