Aplicacion Para Compartir Aplicaciones

I just installed the Android SDK on my Windows 7 64-bit. I'm creating a web app, so all I'd like to do is open the Android web browser. I double clicked on tools/emulator.exe, but all it did was flash a CMD box on the screen for a split second. I proceeded to read the documentation. It says I have to type this command in CMD to open the emulator: