prefixing tracking script to all URLs

I’m using a tracking script that I’ve named /out.php.

Since I’ve got a bunch of entries, I REALLY don’t want to go through and do this by hand (and I’d rather not risk a global search/replace via SQL messing things up) is there a way to prefix this dynamically to all outgoing URLs used on my site.

Also, if dynamic should I change the name or decide to stop using it, I could just change/remove the code. ??

I’ve been looking around the net for snippet of PHP or javascript for this, but no luck so far.