How to change a project type to MVC 3?

Open csproj file from text editor, such as notepad
change ProjectTypeGuids to following setting
    <ProjectTypeGuids>{E53F8FEA-EAE0-44A6-8774-FFD645390401};{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>