Can't up load my udesign-wordpress-theme

I am trying to up load the udesign-wordpress-theme that I recently bought, but it wont seem to up load. The page just sits there and thinks forever. I’m up loading the file from my computer in zip format under the instal themes tab in the theme area. I’ve reloaded the udesign theme many times to make sure it wasn’t corrupt, and even tried to up load other themes, just to get the same result, my computer trying to connect but without end. Some help would be appreciated , thanks.