Imagine controlling up to 9 PCs and displays with a single keyboard and mouse! I have come across software like this in the past but experienced limitations. Recently a colleague of mine highly recommended Multiplicity by EdgeRunner which has been working great for him. It allows you to cut and paste between all the PCS as well as drag and drop files. Even the sound works and it can communicate over WiFi. This can be handy if you have a separate system for your work and use other systems for email, surfing, and social networking. My colleague uses this to easily and quickly ensure his laptop is always current when going on trips or meetings. They offer a 30-day trial and it is only $20-$40 to purchase. Definitely an amazing piece of software to consider using.