Datacolor User to User Support Group.

On your Mac, you know how to select a display profile - you go to System Preferences > 
Displays > Color. There is also a Calibrate... button there, and it launches Apple's visual 
calibration software. Wouldn't it be nice if Spyder2 software were to attach itself there? 
Apple provides for such function, but it is not used by Spyder2 software - I don't know 
exactly which version of OSX starts to provide this functionality, but information can be 
found here:

http://developer.apple.com/technotes/tn/tn2035.html#TNTAG56

You need ability to modify .plist files - specifically Info.plist file in Spyder2PRO.app. I use 
"Property List Editor" that comes as part of Xcode. Under Root, add New Child as 
CSDisplayCalibrator, Boolean, Yes and save it.

make a symlink to Spyder2PRO.app in your /Library/ColorSync/Calibrators folder:

sudo ln -s "/Applications/Spyder2PRO 2.3.1/Spyder2PRO.app" 
/Library/ColorSync/Calibrators/

or whatever is appropriate for your Spyder2PRO installation location. If you click on 
"Calibrate" button now, you will be offered to calibrate with Spyder2PRO. This same 
technique should work with any software you use for calibration - ColorEyes Display or 
whichever.

If this tip is too technical, sorry - I don't have time at the moment to make a script that 
would automate this. Colorvision could incorporate this in a later version of the software.