Add zencart to an existing website

I have downloaded a copy of ZenCart, and need it installed on my website. The site is http://www.thetackshop.biz. If you visit the site, and click on the "Shop Now" button, you'll see it load a page that says our store is having technical issues and will be back up soon. I need you to put the zencart here. I just need it installed, so that I can then go in and add products. And it needs to function within the white area of that page. I don't need you to do any designing or product adding, just hook up the zencart, I can do the rest. The server technology is PHP 5, with MySQL databases available. You may also use an access database if you prefer. I also need this really quickly. Thank you.