For the most part, 32 bit apps run on 64 bit computers. Some exceptions are AV's, where you have the choice of 32 or 64 bit with some, but not all. ESET gives that choice.
I've tried 64 bit browsers, like the one that Mozilla has, but still there's the lack of a proper Flash of it. But one good thing, when I used the 64 bit browser, no ads.
As far as the 64 bit OS goes, XP Pro 64 bit is in a class of it's own. It has to be activated, but there's no validation checker like the 32 bit version. Only Windows Media Player requires validation. There's also no MSE, Windows Defender, or Windows Live Options available. And drivers are hard to find.
Still, this does show a point. 64 bit Windows has been with us for quite some time, since Windows Server 2003 x64 at least. Yet to some, 64 bit is some new, weird, strange, unknown object that just fell out of the sky yesterday, when in fact it's been with us since April, 2005.
http://en.wikipedia.org/wiki/Windows...al_x64_Edition
This article goes on to state that XP Pro 64 bit is a Win Server 2003 edition, being that they're both built on the same base.
The next version of Windows will probably be primarily 64 bit, with a possible 128 bit option in the future. This has been in the works for almost a couple of years now.
http://arstechnica.com/microsoft/new...-windows-9.ars
We'll soon see, as there will probably be a beta of Windows 8 soon, within the next few months. The OEM's are already working with the build.
http://www.zdnet.com/blog/microsoft/...d-numbers/8747
Hopefully, we'll get our hands on the beta soon.
Cat