Pop-Up E-mail subscription ( module) or appearing form? Is it possible with a certain module or anything of that nature to have a pop with a subscription email-collector inside?

I'm on the final touch-ups of the site and have basically got this left and a few other things. But there is not really too much on this site that I can find that answers this question directly for a newbie.
You can try the Lightbox2 module 


  The Lightbox2 module is a simple, unobtrusive script used to overlay images on the current page. It's a snap to setup and works on most modern browsers.


or the CTools Auto-modal module


  Provides automatic modal support for any hook_menu() paths that have 'modal' => TRUE defined. This makes it easy to add optional modal support in any contrib module and helps reduce the burden on module developers to support modals.