WMI filter for < IE10

Hi,

Anyone know if I can create a WMI filter for pre IE10 machines only which we can then use to target a Software installation GPO.

Reason being that with IE10 Adobe Flash Player is built-in and a separate install of Flash is not allowed but we do want that separate install of Flash on any machines which do not already have it built-in.

I have to admit to having never used WMI filters before.

Thanks,
  Nick