About Mac OSX 10.8
(codenamed Mountain Lion)
right-click 'About This Mac 10.8.exe' > Properties > Compatibility > Tick 'Run this program in compatibility mode for: Windows XP (Service Pack 2) > Apply
another preview.. [PNG]
SYS Info - Processor and RAM Memory size
except Startup Disk: Macintosh HD
Doesn't require DesktopX to be installed because it's standalone (gadget) program that can run on any computer.