Lost them all in CS4 4.2. Everything works, but I can't use the keyboard to trigger anything... Space bar used to start and stop video play, enter used to render the timeline... Any ideas on getting them back??? This is like stepping waaaayy back as I used them extensively.

I believe, but am not certain, that these are in the preferences file, maybe you have a backup or clone disk?
XP: C:\Documents and Settings\username\Application Data\Adobe\Premiere Pro\x.x\Adobe Premiere Pro Prefs
Vista: C:\Users\username\AppData\Roaming\Adobe\Premiere Pro\x.x\Adobe Premiere Pro Prefs

Also, this article indicates that corrupted fonts may be the problem: Keyboard Shortcuts - Adobe Premiere Pro (http://premierepro.wikia.com/wiki/Keyboard_Shortcuts)

of course, I am reading this that your keyboard shortcuts are gone. if the program is not seeing the keyboard at all --- can you type text? --- it could be some simple keyboard thingy, driver or cable, or the good-old-reboot might cure....??

/ Battle Vaughan