Error 403 for main WP index.php, DIRECTLY after install

Hi all,

I have just installed WP 3.4.1 (and tried to install 3.4.0 after latest V gave me errors).

First of all I extracted the files in the sub directory of choice … tried to access sub directory but had to write a .htaccess to access the index.php installation…

Installation went fine, but trying to access the main blog at /wp/ or /wp/index.php gives me an error 403. Permission of index.php is currently 0644.

I can access the admin area (after writing a .htaccess file), post, and edit old posts. So DB access is ok.

The link is http://www.highgrowth10000.com/wp/

Thanks for any help!!!