Turning Sidebars On and Off

I am asking the community if they know of a plugin that will allow you to selectively enable or disable your sidebar(s) on or off for any particular page or post in the admin panel when you add/edit a post or page…???

I have been checking in the plugin area and coming up short. I would like the sidebar to appear on only certain posts and only certain pages.

This is not a conventional blog so please don’t tell be to edit page or post template since that will affect ALL pages and posts… ??

Thanks for any info…