Change the front end

I already have a website devolped, and want to use omeka as the libary tab, and embed some omeka info into a few places across the website. I Bought the new website with one click install of omeka, worked great. So the plan is upload my website into public html, but how do I use my index.html, is it just a matter of renaming omekas to old_index.html then using mine. dont want to break everything

Are you installing Omeka at the root ( or in a subdirectory ( Because if you want to just use the flat html files you've already written, or some other CMS, you can put Omeka in a subdirectory.

Its is already installed and is set as root, is it easy to change to