Now that Microsoft has officially released the 64bit of Windows, what is more interesting is you can upgrade your 32 bit OS to 64 bit for free (you need to order before July 31st) – yep its true – for free – nada, zilch, nothing. But, heh heh yes, there is no free lunch in life. To upgrade you give up the rights to your 32 bit OS and must own a 64 bit CPU (e.g. my media center has a AMD 64 Athalon). More importantly you might not have drivers for all the hardware – is this important? Yep, it is very important actually because the 64 bit version will *not* support 32-bit device drivers and will not run any 16-bit applications.