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Right click Computer, click on Change Settings on the right side of the page, then when the next menu opens click Change (where it says "To rename this computer click Change").
System Manufacturer/Model Number Self build OS Windows 7 Home Premium CPU Intel Q9550 Quad Core. Motherboard Gigabyte GA-EP45-UD3P Memory 8GB Kingston Graphics Card ATI Radeon 4870 Monitor(s) Displays Samsung 24", Acer 17" Screen Resolution 1920x1200, 1440x900
Keyboard Logitech MK300 Mouse Logitech MK300 PSU PC Power and Cooling Silencer Case Cooler Master Centurion 534 Cooling CPU COOLER ROSEWILL|RCX-Z775-LX, 3 120 mm case fans. Hard Drives WD 1Tb
WD500GB (2)
WD640GB
I'm an idiot. Problem was that we were trying to change the case of the name to all lowercase, and it wasn't seeing the change to lowercase as an actual change, so it wouldn't let me 'OK" out...