The Mac has no central equivalent of the System window on a Windows PC. But its functions have analogs here:
General tab. To find out your Mac OS X version number and the amount of memory on your Mac, choose a→About This Mac.
Computer Name tab. Open System Preferences, click Sharing, and edit your computer's network names here.
Hardware tab. The closest thing the Mac has to the Device Manager is System Profiler (in your Applications→Utilities folder).
Advanced tab. In Mac OS X, you can't easily adjust your virtual memory, processor scheduling, or user profile information.
System Restore tab. This feature isn't available in Mac OS X.
Automatic Updates tab. Open System Preferences and click Software Updates.
Remote tab. These features are unavailable in Mac OS X.
