Hi. I have started to install CubeCart, but when I click "Continue to Step 4" after typing in my databse details and such, I get the following message:

Forbidden
You don't have permission to access /install/index.php on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

the CHMOD of /install/index.php is 777.

What version of CC did you install and how did you get it onto your server? Check to see if there might be a ".htaccess" file somewhere in your store. Let us know.