331562 Match Wordpress Theme to Site

I have a website at [login to view URL] and a Wordpress blog at [login to view URL] . I would like a Wordpress theme that will look just like my website theme, including the color scheme and header graphics. It also needs to be very SEO friendly (posts appear as [login to view URL] etc...). In the left side bar I want the same menu items as in the left sidebar of the main site, with links to the same place. I'll need a little instruction on how to modify these so I can change them myself if needed. (I am pretty technical but not familiar with Wordpress programming and also not very creative.) In the right sidebar I want an aWeber opt-in form (or space for it, I can drop it in if necessary or provide the code either way). Thanks