IE10 - User Agent String

Hello,

I try to find where the "User Agent String" settings is for windows8/IE10.

For Windows 7/IE9 I use

User Configuration -> Internet Explorer Maintenance -> Connection -> User Agent String

"User Configuration -> Internet Explorer Maintenance" is no more present in windows 8.

Any help would be greatly appreciate. I need this settings to enable SSO on IE with phpCAS server.

Alexis