Apache RewriteRule .* index.php [NC,L] Not working

I am trying to redirect everything to a single page from my /website/folder/ directory.

I added a simple .htaccess with this simple code (I know this would require more code in .htaccess but it's just a test).

RewriteEngine on
RewriteRule .* index.php [NC,L]

When I try :

http://127.0.0.1:8888/website/folder/fileDoesntExistMustGoIndex
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I have an "Object not found 404" error and the access.log display:

127.0.0.1 - - [13/Mar/2010:13:48:31 -0500] "GET /website/folder/fileDoesntExistMustGoIndexHTTP/1.1" 404 1118

I have check the httpd.conf and I see nothing that could alter this .htaccess statement. Any idea?

Edit:

RewriteEngine on
RewriteRule .* http://www.google.ca [NC,L]

This works... but not when I try to rewrite to a page of mine.

RewriteEngine On
RewriteBase /
RewriteRule . index.php

also try

RewriteLog "rewrite.log"
RewriteLogLevel 3

to see what happens