I did that once and had to go to the Doctor's office for a shot! ;)
OK. Find the picture you want to post on the web.
Right click and go to the "Properties" part of the menu.
Highlight the part that starts with http://
Copy and paste the address that starts with http:// = and close with the > and you should have the picture appear.
<img src="http://home.alltel.net/petronski/wkgcover.jpg">
Produces this: