If you are referring to the recovery, just use the trackpad.Thank you.
When I flashed CyanogenMod 7 using volume up/down and power buttons, I noticed that the power button stopped working as "select" (eg after scrolling up/down with the volume button, and then pushing the power button to select "install from sd card"). Instead, the camera button started working as "select". Did I damage anything and didn't realize it?