Visual Studio 2008 and ASP.NET 4.0

Solution Explorer ( then rt. click on solution choose properties)

     --> gets me to: localhost/solutionname/Property Pages ( then choose Build)

          --> in Target Framework click the dropdownlist 

1. .NET Framework 2.0
2. .NET Framework 3.0
3. .NET Framework 3.5

I have vs2008 and I want .NET 4.0

1. Is that possible?
2. If yes, how?