Just a word of caution about using a signal converter such as an HDMI to VGA to connect your PC to your projector. Not all are created equal and not all will work correctly.
Just because a converter says it will work does not mean it will work as expected. If you use one and the image does not display correctly on the projector it is not a problem with the software, it is a problem with the way the converter is handling the resolution.
It is always best you use the same connector on the PC and projector. But if you do use a converter you may need to try different ones if the first one does not work.