I\'m using Visual Studio for c++ programming, and after working and writing programs in x86 environment (32bit Mode) I tried to build my x86 project in x64 environment so I
I think there is a confusion here, tell me if I am wrong, but you're basically have problems setting up your console program to the x64 platform.
If you're using the express version you will need to install a proper Microsoft Windows SDK for Windows 7 and .NET Framework 4 and SP1, as stated on the link you provided otherwise the x64 platform option won't be available. Have you already done this?
Once done this, switching to the x64 will be pretty easy, you will get the option on the dropdown list of the platforms, should compile fine (and no, you don't need to use the win32 configuration).