I am using 1&1 hosting (USA).

I am using this .htaccess file to fix the php for php5, and the mod_rewrite.

Options -MultiViews
AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php
### SILVERSTRIPE START ###
RewriteEngine On
RewriteBase /SS_test/silverstripe-v2.2.2
RewriteCond %{REQUEST_URI} !(\.gif)|(\.jpg)|(\.png)|(\.css)|(\.js)|(\.php)$
RewriteCond %{REQUEST_URI} ^(.*)$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule .* sapphire/main.php?url=%1&%{QUERY_STRING} [L]
### SILVERSTRIPE END ###

The problem I have now, is that non of the navigation links work.

First, I have to have this to even see the home page:
mywebsite.com/SS_test/silverstripe-v2.2.2/?flush=1

Then, If I click on any of the links, such as About us (mywebsite.com/SS_test/silverstripe-v2.2.2/about_us/)
I get a 404 error, even though the page clearly exists since it is still on the default install.

Another thing, when I click the home link (it links to mywebsite.com/SS_test/silverstripe-v2.2.2/home/), I am taken to
mywebsite.com/SS_test/silverstripe-v2.2.2/check-php.php

Has anyone ever seen something like this? My guess is its a problem with my .htaccess file.

I did use your .htaccess code, but It didn't work just "as is" so I modified it a little bit. I'll go back and try to get it to work again. Now that I haven't messed with the site for a day, maybe something will just "click".

Thanks again for the awesome code

------------------------------edit 1

wow... just WOW!

I had a space after the line:

RewriteBase /SS_test/silverstripe-v2.2.2

and that messed everything up.

It works wonderfully now lol!

Thanks again for your help