How to create shortcut to open an application?

[Doju]

I watched this video:

http://www.apple.com/business/theater/#customizingkeyboard

Doesn't seem to work. I want to add a keyboard shortcut to open Plex. Preferably command + shift + P.

But under Snow Leopard, I go under Keyboard, Keyboard Shortcuts, +, All Applications, "Plex..." (no quotation marks), command-shift-P

Won't open. Help?

 

[Gregg2]

Are you sure that your chosen key combo is not used by the System or another application for something else?

 

[JediMeister]

I don't think you can actually keybind the launching of an application. That video refers to in-application shortcuts, which you find under the File, Edit, View, etc. menus. The only reason she could launch System Preferences is because its a menu item in the menu.