Language support and calendar/date picker control

Hi, I suppose this is more of a question of how does Microsoft handles support for languages, but here goes. Here's the scenario: - English OS - Application developed on an English OS - Application uses the calendar and date picker controls. If the user of the application is on an English OS, but wants to see the application in French (calendar formats and all), is that possible? Does the user have to have some MS French-language specifics components installed on their machine? Thanks.

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