It has probably put it in your C:\Users\<username>\Documents\Visual Studio xxxx\Projects directory somewhere. You can run "nmake /?" to see a list of nmake options. If you run "nmake /N" it will show you what it will do without actually doing anything, so that might give you a clue where it is putting things. I don't know how you have created your nmake makefile, but that's where all the instructions are that aren't imported from global VS confguration files.

When you run the Visual Studio IDE, you can see the default configuration using the Tools -> Options command from the menu.

I am not sure I understand why you are doing this from the command line and not from the VS IDE, where you have a lot more information and control of how your build proceeds.