Here's a Zeppelin great,nobody,as far as i know, has ever posted this, it's not a very popular Zeppelin
but here it is.
Play with a slide.
-|----------------------------------------------------------------------------|
-|----------------------------------------------------------------------------|
-|-3\0-3\0-3\0--/12-12-12-12--3\0-3\0-3\0--/12-12-12-12-----------------------|
-|-3\0-3\0-3\0--/12-12-12-12--3\0-3\0-3\0--/12-12-12-12-----------------------|
-|----------------------------------------------------------------------------|
-|----------------------------------------------------------------------------|
That's the main riff anyway. Please e-mail me w/ any suggestions.