Those VIs come with IMAQ Vision which you must purchase. If you have bought IMAQ Vision for LabVIEW, try reinstalling it and make sure the path you install it in is the correct one (if you have multiple versions of LabVIEW, it may choose a different version than the one you want to use it with).
Brad, I am not sure if the IMAQ is part of a toolkit I have or not. I have an IMAQ section in my panel with imagetoarray.vi and some others. Do we get a partial with some toolkit?