A client pointed me to the site www.sitesolutions.com, and I love their webmaster tools. One that I’ve already used on my own site is their SEO analysis. It gives you a clear indication of how you are using your keywords and meta tags and precisely what you can do to make them more effective. I’m not promoting their paid services, I don’t know anything about them, but they do have some fantastic tools that will help you analyze your own SEO effectiveness. Their analysis tool can be found here: http://www.sitesolutions.com/analysis.asp, scroll down to the middle of the page.
Depending on your site setup, some of the recommendations you can do right now on your own, and some you might have to contact your web designer to help you with.