Q: My camera/iSight is apparently disabled--can't use Skype or Photo Booth. How can I fix this?

Was your MBP plugged in to the charger when you did the SMC reset (which is actually Shift + control + option + power button, off the top of my head)?

http://support.apple.com/kb/HT2090 How to Troubleshoot iSight

Check out the following thread:

my isight camera is not working-not recognised with photo booth or ichat

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To fix your iSight, shut down computer. Reboot in safe mode (press power button and then hold shift key down). After computer boots, restart again.  Hopefully, your iSight will start working again.

If the SMC reset was done successfully, the light on the MagSafe charger should change colors briefly from orange to green and back.