Changing Default Editor in Lightroom 3

[BobD]

In Lightroom, how do I change my default external editing program from Photoshop CS5 to "Photoshop Elements"?

(more)
As a Lightroom instructor, I would like to demonstrate editing with Photoshop Elements as the default editor.  Because Photoshop CS5 was installed prior to installing "Elements", the default editor remains Photoshop CS5.  Without uninstalling CS5, how do I make "Photoshop Elements" the default editor in Lightroom.

I believe I can change the "Additional External Editor" in the Lightroom's preference file ("Lightroom 3 Preferences.agprefs") but I see no reference to changing the "default" editor.

[CoyoteButtes]

I believe that the only way to get Lightroom to use Photoshop Elements as the default external editor will be to uninstall Photoshop. Victoria Bampton discusses this in chapter 9 of "Adobe Photoshop Lightroom 3 - the Missing FAQ."

Stan

[PeterAit]

You can, however, make Elements appear on the Edit In menu. Not default, but available. Edit > Preferences > External Editing than use the Additional External Editor section to make your settings.