I know I've read of a way of doing it, but can't quite seem to find it now, but if I want to test a new design on a live blog using the Theme Switcher plugin (the Mr. Peer version via Alex King), what do I need to add to the end of my URI to load the theme.
To be clear, I don't wish to make the theme available to the generally reading public by including the call, just myself. I tried adding ?wptheme=themename, but that didn't work. And I did choose the theme in the options panel for the plugin.