Why is my websites title/description not showing up in google search?

[Jake]

Google finds that information in the meta description and meta title programmed into normal sites. The all in one SEO plugin is supposed to give you wordpress site the same header information, but it is up to you to fill in the added fields for each page.

To view the plugin effect from Google's point of view, look for meta lines in your browser's view page source display on a viewed page (not edit page)

Here's a meta code line from an Answers index:
<meta name="title" content="Answer | Open Advertising & Marketing Questions – Yahoo! Answers">

While at it, be sure to chance the permalink settings to something like, Custom: /%postname%/ to get more seo benefit out of the URL.