1) Go to the site you have found the clip on and get the clip up
2) Highlight the url code (shown in blue) by holding down the left side of your mouse and dragging over the code. Then right click your mouse and choose "copy" from the small drop down menu
3) Copy the code into the insert link box, but remember to remove the http:// from the box first. Then right click and choose "paste" from the small drop down menu.
4) Submit new thread
