How to detect indeo codec 5.0

[tecoman]

I need to detect if intel indeo codec 5.0 is instaled , and if isn´t to show an object to install it , nex time user runs the menu the regiter will be check and if codec is present wil continue
the estrig of the regoster is

HKEY_CURRENT_USER\Software\Intel\Indeo\4.1
HKEY_CURRENT_USER\Software\Intel\Indeo\5.0
HKEY_CURRENT_USER\Software\Intel\Indeo
HKEY_CLASSES_ROOT\IVFfile
thanks