Your smart card may contain multiple certificates and keys. These certificates must be registered once with teh Windows Certificate store so that applications can use these. Typically certificates are registered automatically by the certificate propagation service when the smart card is inserted the first time. If this service is disabled, or if the certificate is not correctly registered for another reason, you can manually register the certificate using this tool.
The registration tab also display the number of retry left for User PIN and SO PIN.
Click on the register button to register the certificate in your smart card.
Important: The registration need to be done only once for each card.