You're going to totally confuse him now.
Type it into there like this:
<a:www.google.com>Click here to goto google!</a> at the beginning, do not add http://. Just keep it like this:
www.google.com. or you can change google to whatever else site you want. Don't try to copy and paste it into your server message thing, it wont paste the whole thing into there. Just write it down, and then type it in there. If you still don't understand or can't figure this out, You're out of luck.