I want to power my website from http://www.example.com and not from http://www.example.com/foldername
I've completed this task and this is working but before people actually get to the WordPress website they must pass another website-page. See the scheme below.
www.example.com: shows a page with some information and a link to navigate to the wp site.
My problem now is that when I follow the steps on http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory, my index file is fighting with the one from WordPress. I hope people understand the problem.
EDIT
Changing .htaccess to:
DirectoryIndex home.htm index3.php index.htm index.html default.htm
This is working to change the homepage, but as soon you are on the WordPress website and you click on home in the menu, you get back to the homepage set in the .htaccess file.