Hi Chrystal, I think you are looking for this post: http://www.hometalk.com/135573/arbor-swing-my-father-made-for-me-what-a-great-birthday-gift-this-was-thanks-dad
There are other kinds too...check out this article I wrote.
we just made our kids a tire swing, easiest thing in the world... just need an old tire and a rope. I used spray paint on ours to make it prettier, white as the base and splashes of apple green.
If you go with the tire swing, make sure it drains well. Otherwise, you could be raising some nice mosquitoes, too.