The ability to turn an ordinary desktop computer into mulitple machines is a great concept. I really like "Free" and here is a free license that is available for non-commercial use. I seen an article posted fairly recently showing this type of technology splitting a desktop into 8 different machines. Unless you are running very resource intensive applications on your machine you have the ability to make this split without loosing any current functionality. Full blown lab environments can now be established at a very low cost. Slick!
Turn One Computer into Two
Free 2-user Version of Desktop Multiplier™