I am working with an SEO person that gave me the conversion code to put in and said that he needed a URL of a static page to enter in on the Adwords side of things. I think that he is saying it needs to be static, just so that it will be the same everytime.
I pulled /cart\.php\?mode=order_message&orderids= in reference to this post:
http://forum.x-cart.com/showthread.php?t=44076&highlight=Google+Goal+Track ing
Thanks for your help!