Hey Mr James
There are a lot of different things you can do to increase your search engine presence.
First and foremost, I'd recommend adding a plugin called "All-In-One
SEO Pack." This will allow you to create canonical URL's and control
the meta-data on each of your pages. Really good stuff.
This forum thread should help you with the various settings of the plugin :)
Secondly, and I'm sure you've heard this before, focus on keywords when
you write. Look at what search terms are bringing people to your blog,
versus what search terms you want people to be finding you under, and try to shape your posts accordingly.
I'm not suggesting you stuff your posts with keywords, just try to use them as naturally as possible :)
Let me know if you need more advice!
-Chad