I no longer have my primary development laptop, but I recently cleared enough space on my Ativ for VS2013. However, I'm a bit confused. On the SDK download page on the Windows Phone Development site, it says if you don't have Visual Studio, you can download VS2013 Express for Windows, which includes RC2(?), which it says includes the development tools for Windows Phone 8.1 on the Windows Phone Developer site. However, after installation, I cannot seem to find a way to create a Windows phone app like it suggests. Furthermore, I'm unable to install the 8.0 SDK with VS2012 Express, since it requires a 64-bit machine (which is bull since VSE is x86 compatible, and the 64bit requirement is due to the emulator, which doesn't even work on most 64 bit machines due to the lack of hyper v support on anything but newer, higher end core processors.)