MVV stands for 'Machtiging tot Voorlopig Verblijf', meaning permission for temporary stay.  It is a visa for entry and stay in the Netherlands. Before you can apply for a residence permit, you would need to be in possession of an MVV. You can apply for the MVV at Dutch embassies or consulates in your country of residence/origin. Since 2013, it is also possible for your ‘sponsor’ to apply for the MVV on your behalf at the IND (the Dutch Immigration and Naturalisation Services). Find more information on this page.