Running a 64-Bit application on a 32-Bit Operating System?

You read it wrong.

x86 is 32-bit.

But MS no longer supports XP. So that won't run on XP.

No it will work on 32 bit. There is 86 bit operating system I think it must be x86 http://en.wikipedia.org/wiki/X86 which 32 bit architecture. But it won't work in Windows Xp also the windows Vista

It will work on Windows 7 and Windows 8 which support x86 also can be 64 bit

confident. you basically can not flow any incorrect way around. i'm assuming you're conversing approximately Vista or homestead windows 7... homestead windows has something it calls WOW (homestead windows on homestead windows i believe) that runs 32-bit apps interior the sixty 4-bit ecosystem. oftentimes the bigger difficulty is calling drivers to your hardware. as long as you have not got any hardware older than 2-3 years, it probably basically isn't a topic. yet whilst there is something which you will not stay devoid of, flow to the producer's internet site to work out in the event that they have Vista/homestead windows 7 drivers in the previous you purchase. HTH, James

No 64bit software will not work on 32bit system period, windows 8 software will only work on windows 8 system not on xp or windws 7 period, Plus Microsoft Office 2013 is for MS Cloud mobile computing,

If your looking for an upto date office package then look at Libre Office it as all the same features windows Office has, and more besides,

http://libreoffice.org/