How do I support Unicode in my current VC++.net project?

Currently my project is VC++.net written in Visual studio 2010. I need to support Unicode in this project. I changed my project properties that is Configuration Properties->Character set from Use Multi-Byte Character Set to Use Unicode Character Set. Then when building, lot of errors is coming. Is there any other way to do this?

I guess you should fix the errors.
BTW, what kind of errors do you get?

.NET code uses Unicode by nature, regardless of the character set project setting, so I suspect the problem originates elsewhere.