Oh, and if you are wanting to do picture links like you can do from Harvey's auto-linker for amazon, it is really easy!:
1) click on the "insert hyperlink" icon above angry smiley
2) without moving cursor (while the cursor is still between the url tags), click on 'insert image'
3) go to image on site and right click, then highlight and click 'copy image url'
4) paste in between image tags
5) go back to product page and copy the address in the address bar
6) add an = sign to the right of the left url tag (i.e. [ url= ]) (don't put the extra spaces next to the brackets, though - I had to for demo purposes because otherwise it turns the rest of the message into a link)
7) paste address bar url to the right of the equal sign
And voila, you should have a clickable image. If the image isn't showing up (which happens when I've tried to link to a QVC picture), simply right click the image and 'open image in new tab', then copy/paste the url from the new address bar - though most of the time you won't need to do this.
It is much easier than it sounds - once you do one or two, it will become second nature!