dirext x help need help

[gamesfan]

hi every 1 does any 1 know how to fix this problem running windows 7 64 bit.
a cabinet nessarey for installtion cannot be trusted. please verify the crtophographic services are enabled and the cabinet file certifacte is valid. and ive checked the settings and thet are enabled and still this error shows. i get this error when i try and update my direct x

[NaturalViolence]

Where did you get the runtime from?