Sorry but I'm not sure what you mean about connect to your ISP. I'd contact them by phone. ????

If you're getting a bit lost with the static IP don't panic. Are you using the directions from portforward.com?
http://www.portforward.com/networking/static-xp.htm

Follow them, get to the stage where you have all that info showing in the black command page, then copy it somewhere or print it. That way, you can have all the info at hand when you go to do the static IP setup & it'll hopefully not be too confusing.