http://www.lockergnome.com /media/2011/07/21/nook-color-cyanogenmod-install-and-review/
After rooting a Nook Color with ManualNooter in a previous video, this time around Jake shows you how to install CyanogenMod 7, giving you Android 2.3.3 aka Gingerbread on a Nook Color for a full featured Android tablet. Along with CyanogenMod, Jake also installs the Dalingrin overclocked kernel, which supports clock speeds of up to 1300 MHz on the Nook Color processor (stock speed is 800 MHz).
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