I think that photobucket and Flickr by default link the picture back to their sites (for ad revenues). Here is what you do:

Determine the URL of the picture (should be something simple like: http://xxx.photobucket.com/directory...rimagename.jpg (and this darn thing made it look like an actual link. it isn't). To find that: on firefox right click on the image, select view image and the URL will be on the URL box on the top of the page. In Explorer, right click, select properties and the image URL is in the pop up box under image URL. You can copy and paste from both places

use the img tags in the source of your write up should be something like this: <img src="http://xxx.photobucket.com/directory...rimagename.jpg">

You are home free