Hello,
Did you find an answer? I have the same problem; getting ready to deploy IE10 internally using the IEAK 10 to customize and the only option I find is under Additional Settings -> Internet Settings -> Components Updates. However, the settings in this
sections are entries for "URL to be displayed for updates" and "Update check interval (in days)".
After IE10 is installed, on the "About" dialog, there is a check box for turning on/off check for updates.
Unless there is a way to turn this off from the IEAK, I may need to create a script that runs post-install to change appropriate registry keys.
Thanks.