How do you change your hard drive that games are installed to on steam?

I have two hard drives in my computer now. The C drive is were steam is installed to and the F is my new terabite. I would like my games to install to F instead of C now. How would i change that without reinstalling steam?... Steam as in the Direct to Drive program.How do you change your hard drive that games are installed to on steam?delete and installl them again but why dont u play world of warcraft u dont need steam to play it on http://www.wowoptimus.com/news.php