I have an Alienware M15x, and the only external display is a single HDMI output. I'm trying to connect two vga monitors to my laptop and was wondering what I should buy. I want to run it as an extended desktop. Would I need a single HDMI splitter with two HDMI-to-VGA converters or one HDMI-to-VGA converter with a VGA splitter? Is either possible? Suggestions?