Thank you Ipstenu!
I did forget to mention that I have a forum as well in a subdomain of my main site that is still static. So the blog and the forum are separate folders in the root.
I was thinking of turning the existing static into a wordpress site, as you recommend. It is a big site, so it will take quite some time to transfer it, page by page. I saw a vid on how to do this and wpqueen said that I could do it by first uploading WP to a file in the root, calling it say "test1" and do the transferring behind the scenes, then move it to root when it is ready.
So when I do this, can I set up another wordpress site, thus having two databases (well, three if you count the forum)? If so, will this foul me up when I do the integration?