Re: MacOSX skin.
if you mean a mac OS X skin for windows, you can download flyakite OS X, that has a skin in it and it makes your PC look like mac OS X. You can download it here: http://osx.portraitofakite.com/
Desktop: Dell Dimension E510, 2.5GB RAM, Intel P4 3.0GHZ, 250GB HDD, Windows Vista Premium. Might not be the best, but the old girl is still running good.