Can't access programs in subdirectories!?

Hi there, I hope you can help.

I am trying to install 2 apps in subdirectories of my Drupal install. One program is a CRM and the other is a web analytics program. When I try to navigate to the subdirectories to install the programs, I get either a 404 message from Drupal, or Firefox telling me "Firefox has detected that the server is redirecting the request for this address in a way that will never complete."

I am running Drupal on a VPS with full root access, cpanel & WHM. Drupal is not installed in a sub directory, it's in the www root.

This is what I have tried so far:

Adding a .htaccess file to the subdirectories, and adding this to those .htaccess files:

That didn't work, so I tried editing my main Drupal .htaccess file:

I got these "fixes" from various postings, but I get the feeling they are geared towards older versions of Drupal with a less advance .htaccess. In Drupal 7, this should be automatic, right?

This page is where I got most of the information, but nothing on this page fixed my problem: http://drupal.org/node/30334

Well, anyways, I can't get it to work, and it's very frustrating. I hope someone out there can lend me a hand.

Thanks!