I see, so you have installed Moodle on root? which plenty others do, but its always recommended NOT to, and keeping moodle in its own sub-folder, so in case if you are adding more applications (Like WordPress, Forums, Wiki, Mahara) then it will be much easier to manage each application, rather than managing different folders on Root.
Using a theme is recommended that will bring the WOW effect to your website, like Emma mentioned, you can always make a customisable page out of Moodle own theme and there are plenty of wonderful themes to start with, like Essential, Elegance, BCU to name a few.
You dont have to do a re-install, just move contents of your Root folder (all moodle sub folders) into a sub folder like moodle/lms, and go into config.php and change the address, say for example before you had address like "http://www.mymoodle.com" now you'll be adding sub-folder to it, like "http://www.mymoodle.com/moodle"
and in your .htaccess file, just do the 301 redirect to your Moodle. even in this case if you want to add landing page of static content, it would be outside of that moodle folder on to root folder, this way if someone clicks HOME link in Moodle, they will stay on Moodle, though you can always give extra link to your site's landing page.
However, as Emma mentioned, you can achieve all that (static links, about us, mail us etc etc), using any of the Moodle Themes.