vinyl post or post jacket? (pictures)

[fenceman]

I'm planning on installing a vinyl privacy fence (6 feet) and I'm trying to track down the parts. I found the panels, cement, screws, and hangers. I have a problem finding the posts. So far I have found this Freedom Vinyl Post Jacket 4x4x100" (http://www.lowes.com/lowes/lkn?action=productDetail&productId=100429-73428-24172&lpage=none ).

I don't understand if this is a post or a post jacket to cover wooden 4x4 posts. The other post that they have is small, only 6 feet, and isn't labeled a jacket. Can anyone confirm if this item can be used as a post to hold these panels: http://www.lowes.com/lowes/lkn?action=productDetail&productId=124718-73428-124718&lpage=none

Thanks.

[anon1m0us]

Here are some posts for you to look at:
http://www.lowes.com/lowes/lkn?action=productDetail&productId=87378-000073428-68001&lpage=none

or check out Homedepot: http://homedepot.bighammersoftware.com/ProductTable.aspx?cid=834085

I am also thinking of installing a Vinyl fence. Can you inform me what I need to install a viny fence, Posts, panels, what else???

[fenceman]

You need cement, screws, panels, rail hangers, and posts. I think that's it from materials.