HELP!!!! Can't do anything with MacBook Pro

MacBook Pro keeps booting from the Tech Tool Pro CD I was using to repair the volume structure on the hard drive. Problem is, I can't get it to boot from the repaired hard drive, because none of the startup keyboard commands work!!!
Holding down D doesn't boot from the hard drive
Holding down Option doesn't give me a choice of startup volumes
Holding down the eject key (or the mouse button) doesn't eject the disc
Holding Command-Option-P-R doesn't reset the RAM
Even plugging in an external USB keyboard and mouse and using these commands doesn't work. In each case, the computer re-boots from the Tech Tool Pro CD, which essentially renders the computer useless.
Does ANYONE have ANY ideas?

Try resetting your SMC.
Resetting the System Management Controller >>
-Bmer
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Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
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