Installing a managed card requires a managed card file that is issued by a managed card provider. If you do not have a managed card file and you want to install a managed card, exit Windows CardSpace and contact the managed card provider. To install a managed card file, do one of the following:
Locate the managed card file in Windows Explorer, and then double-click the file icon.
View your cards in Windows CardSpace, click Add a card, and then click Install a managed card.
Before your managed card is installed, you will be asked to review information about the card provider so that you can be sure that you want to install a card from that provider. After you install the managed card, it will appear in your card collection and you can send it to sites.