scamp - You should be able to just paste the URL in your post and hit 'Enter'. But, if that doesn't work, try this:

1. Copy the entire URL from the website.
2. Open a post here on the board.
3. Click the Link icon on the middle menu bar ... it looks like a globe wearing goggles. lol
4. Paste the link in the URL field in the window that opens, and click OK.