I had this cool idea the other day and I wanted to present it to you guys. Here's the basic information: I have a Mac Pro with Dual Dual-Core Xeon Processors. I have Mac OS X Snow Leopard and Windows 7 Ultimate on separate hard drives. I have 4 GB of RAM. Now, here's the interesting part. Would it be possible to have two running OS's at once? I don't mean emulation. Boot the computer into native Windows, but also have it booted into Mac OS X at the same time. My idea is to have Windows 7 use 2GB of RAM, running on 1 dual-core Xeon and Mac OS X running on 2GB of RAM with the other dual-core Xeon. Each OS could be running at the same time, but they'd be using separate resources and you could toggle between them with a hot key (kinda like people do when they hook up 1 monitor to 2 computers.) What do you think? I know it's probably impossible right now, but does it sound like a good idea or am I just dreaming? Probably not possible with any current system on the market.