I have a photography website that I am building. Aside from the splash page, all of the other pages have the same header and footer. I figure I can use a master page to save some time. Since the splash page is completely different, should a create a new .png document to work on that? It seems like once you set a master page, ALL pages in the .png have to incorporate the same elements.
Also, with a master page do I only need to slice and export the master elements once? And just slice the new items from the different pages?
You don't need a separate PNG file. Simply create the splash page as a separate page not linked to the master. You can remove the master page layer from any page by choosing this option in the Layers panel options.