All the desktop wallpapers available for download can be used for either PC or Mac.  Installation instructions are included, but are pretty much oriented  for Windows system only.  The 640 x 480 sized desktops also look pretty good on monitors at 800 x 600.  Enjoy!

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	Spherescape 640 x 480 This is one of my all time favorite tranquil images.  Made a signature out of it, too. download this desktop
	The Island 800 x 600 I think the island itself is pretty cool, but the overcast sky really gives this an ominous feel - like it's some part of Hawaii nobody wants to visit. download this desktop