Is there a group policy to disable this checkbox, I don't want compatibility view mode to be allowed on my network at all for anything or for any site. I don't even understand why Microsoft added it. It doesn't even work the same as IE7, instead of having to support 3 IE browsers now, Microsoft made it that 4 need supported.
You can do 1 of 2 things I believe:
The GPO policies are located in:
Windows Components\Internet Explorer\Compatibility View
(both user and computer settings have them depending on how you want to deploy them)
You can either turn off compatibility mode completely for the browser: "Turn off compatibility mode"
Or you can disable compatibility mode just for intranet sites: "Turn on Internet Explorer Standards Mode for Local Intranet"
See here: http://support.microsoft.com/kb/956197