MotionBuilder Installation and Licensing
System Requirements & Certified Hardware
System Requirements (at: www.autodesk.com/motionbuilder-systemrequirements)
Certified Hardware (at: www.autodesk.com/motionbuilder-hardware)
Installation and Licensing documentation
Autodesk MotionBuilder 2011 Installation and Licensing Guide (.pdf)
MotionBuilder documentation & Release Notes (at: www.autodesk.com/motionbuilder2011-documentation)