Sure you can. Just set the Value property of the radio button to 0 or 1 depending on what you want. To make sure the user doesn't change the value for you, set the Enable property to 'inactive'. That way, the radio button will look like normal, but clicking it won't make a difference.
Another way (Not tested by me) would be to place a small square panel and then change the collor from say green to red. That should be very clear to the user.