Please, look around next time before you post an unneeded topic, you can get the answer to almost any of your questions Here at the Help page. I hope that helps you out some!
lol @ jwalshr. That's how you do passive-aggression!
@ steevo15: You can use the Link button on the form. But all it does is surrounds the address (complete with http:// prefix) with [url] and [/url] (no spaces).