Got a Theme–no room for widgets..

Hi,

I have a great theme that I enjoy using, but it is not built for widgets right now http://perfectlyincomplete.ktravisj.com/ . I get the

“The theme you are currently using isn’t widget-aware, meaning that it has no sidebars that you are able to change. For information on making your theme widget-aware, please follow these instructions.“

Message when I try to go to widgets in my admin panel. And when I follow that link to the http://codex.wordpress.org/Widgetizing_Themes page it gives, it makes it look like inserting some HTML/php code fixes the whole problem–is it as simple as that?

Here’s the deal: I do not have AdSense on this blog (I am using it on another blog of mine), and I want to use AdSense on this blog. But I do not know if

– going through the rigamarole if making this blog widget-ready is the best solution
– or if there’s a just a nice plug-in I should use
– OR if I should just take down this thing altogether and start over with Thesis!

All I really want is AdSense.

Thanks for any insights anyone can give me on this.

–etcbbu