Ok, I have read many articles and posts on the template customizations, but even after downloading several templates it's not clear to me how to install one of the templates.

Here's what I have done. Upgraded to 1.3.7, downloaded the slovak_classic_v1.0 template and unzipped it. Got on my server(linux) and navigates to includes\templates and found classic and template_default.
I then FTP'd the whole directory structure of the slovak template into the template directory. Once I go to admin -template selection, it does not show my new template as being available.

What am i doing wrong? I really need to get this working asap.
Thanks for any help !