[TYPO3] External URL page goes to wrong page

[Rosina Bignall]

I'm a newbie to Typo3, but I've been able to figure out most of the 
things I've tried.  But, I'm stumped on this eventhough it seems really 
basic...

I've set up a page to be type External URL.  In the External URL field, 
I have my site, eg.:  http://www.typo3.org/

When I go to that page, I get http://www.w3.org/Protocols/ and an Alert 
that says: 550 No such directory.

This link is at http://rosinabignall.com/site/23  (or by clicking 
external URL in the menu at http://rosinabignall.com/site).

Can someone help me figure out what's going on here?

Thanks,
Rosina