How to insert/apply a plugin

Hi.

I’m a newbie here, and though I get that WP and it’s many features are great stuff, I’m struggeling with probably the most silly thing for you experts….

I installed a couple of plugins which I wish to apply to my custom design.
(I made my own template-files and a custom page for my frontpage)
Now: On my frontpage I have four div-tags containing an image each. I want this div-tag to become a menubar with two listings, and when clikced upon I want a popup-window to appear with the listings content.

I installed the Anything-Popup plugin, and it shows in my widgets panel. I did as suggested, and draged it onto the sidebar-panel in the widgets menu, but HOW do I make this plugin work in my frontpage?

I thought it was a drag and drop feature, but maybe it is not that simple??