I have an existing website and I’ve successfully managed to install wordpress into the website but it has made itself into a separate page such as domainsite.net/wordpress. And that’s fine and all but unfortunately the blog page doesn’t share the same layout as the rest of the site. So what I’m wondering is how I get my site layout onto my wordpress blog so it matches. Would I have to make the current site layout into a wordpress theme? And if so, how would I do that? Thanks.

http://moxiegirl.net/
http://www.moxiegirl.net/wordpress/ and you can see the difference =/