If you have a 64-bit cpu, it wouldn't hurt having a 64-bit OS.  But not Vista 64 anything.  Despite Microsofts' distancing the second cousin twice removed airs, Windows XP Pro x64 is the only 64-bit OS worth having (outside of Unix OSs).  MacOS X Leopard has not completely filled this gap for 64-bit Mac support.  It can still be purchased sans OEM computer equipment (wink wink) and one suspects that M$ isn't complaining too much realizing the predicament they have created with the premature ejaculation of Vista. ;P

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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