Custom Windows 7 Credential Provider

I need a custom credential provider to work with a biometric SDK from Griaule. The project should successfully load a DLL and implement the methods and callbacks from DLL. Manual and files necessary to use SDK are attached, but there is a lot of information out there about their library. The credential provider needs to: 1 - Load succesfuly the DLL and initilize the SDK (GrInitialize) 2 - Implement callback methods (GrCapInitialize, GrCapStartCapture, GRCAP_STATUS_EVENT_PROC, GRCAP_FINGER_EVENT_PROC, GRCAP_IMAGE_EVENT_PROC) 3 - Implement additional logic to check templates and and finalize DLL (GrCapStopCapture) 4 - Auto focus to credential only when a fingerprint reader is connected (see SampleHardwareEventCredentialProvider project at [login to view URL])