How to use Unicode in ASP.NET web application??

Hi all,
        I am making ASP.NET web application which uses language other than english, that is Hindi(kruti Dev) For ex:-Hindi(Kruti Dev)=????? and its unicode conversion=%u0930%u094B%u0939%u093F%u0924 , i want to use this unicode in my entire application, so that it shows only ?????(from example above) So please can anyone tell me what are settings required in ASP.NET application for unicode ,Also please tell me should i store data as Unicode in database table or as my language[Hindi(Kruti Dev) ].??Please help me
 
Thanks in advance
Rohit J