General Where to upload a template?

Hi,

I know this might seem stupid, but if I want to add an template to my homepage (http://www.topgearforums.net/) where do I upload the files?

The template folder includes:
images (folder - includes images in the image folder)
style - Cascading Style Sheet Document
index - HTML Document

And also how would I change the text that would display on the page? And If I wanted to have http://www.topgearforums.net/ as the template, and also have a tab (http://www.topgearforums.net/example/) how would I get it to display the template aswell but useing that tab?

I got told I'm suppose to upload them in public_html. But all these files are already here:

I only file I put in there was "tos-privacy-policy". No idea where everything else came from.
These are other folders:


I used RvSiteBuilder to install the current theme on my site. I'm a complete novice.

 

I emailed my host, All done now.