I would *think* this would be a simple Automator action to write

[Zoidberg]

I just can't make this work. I'm going through automator and trying to come up with an action/workflo that would:

(a) open the Monitors preference pane
(b) tell my secondary monitor to either:
(b1) rotate 90 degrees or, if it is already in that orientation,
(b2) return to standard orientation
© exit w/o the need for the confirmation dialog box in (b1) above

Yeah, it's not a big deal to go into the prefs and do it but that's what making a workflow is all about, right?

So until they build monitors with the orientation sensors (whose name escapes me at the moment) (accelerometer?) like in the iPhone, I would love something like this.

[Marc Anthony]

Hmmm, I don't think that can work, as Automator doesn't use conditional considerations.

[C(-)ris]

You need to use Applescript to do this. Try using the record feature and see what you can get.

[Doc]

That's tough, even in AppleScript.

You'd have to resort to GUI scripting, which is a huge pain in the as$.

[Monster]

as C(-)ris said, a recorded automator action may be your best bet, of course you would have to have two of them depending on which way you wanted to flip the display output.
I suppose you could set it up to ask you which way you wanted to flip, A or B, but that would put an extra step in.