lucy24 - 11:58 pm on Feb 7, 2013 (gmt 0)
That sounds like a typo. But it's a basic mod_rewrite test: If you change the rewrite into a redirect, you will see the result in your browser's address bar. Then you can see if (1) the redirect/rewrite is taking place at all, and (2) it's going to where it's supposed to go. When there are php scripts involved, you may need to change some other detail of the target as well, so the script can't do anything to it.
Again, all this is purely for experimentation. If you haven't already got MAMP/WAMP or linux equivalent (uh, it isn't called LAMP is it?) install it. It will not always be identical to your live setup, but it is definitely useful.
A 500-class error should show up in your error logs. Go have a look.