Please don't hotlink to images as this is considered bandwidth theft. Instead, save the image to your computer and upload it to you own account on a third party image host. You can post images from your image hosting account here. If you want them to appear inline as an embedded image rather than a link, just wrap the url in IMG codes (as long as they do not exceed the 600 x 600 limit):
The sticky post I'm linking you to below is one you should read. You can find it posted in nearly every section of this forum, so you can't (or really shouldn't) miss it.
Hotlinking: What it is and why isn't allowed.