Hi Dan
Did you get this sorted? I ran my weather site through Joomla with many of the standard templates (including the saratoga template). From memory I Iframed everything in. You can use the Wrapper menu type, when creating a menu item for the page you want to display.
For some pages I manipulated the PHP to bring in the additional data I needed on that page.
Ultimately though I gave up on it. The combination of keeping up with the Saratoga updates and the Joomla updates took alot of the fun out of it! Let me know if you are still interested in doing it and need some ideas
Cheers
Andrew