Program Files (for win xp x86 and vista x86) Program Files(x86) (for win xp x64 and vista x64 for 32 bits applications) Program Files(x64) (for win xp x64 and vista x64 for 64 bits applications)
You should be able to install ether or even both.
PC = Personal Computer. Mac OS = the Operating System used by Apple's Macintosh computers. X86 = A 32 bit processor. Originally the name came from Intel's 8086 processor which was a 16 bit processor but the name X86 is now used to denote a processor that can handle 32 bit and 16 bit instructions. X64 = A 64 bit processor sometimes known as an X86-64 as they can handle 16, 32 and 64 bit instructions.
Assuming that your computer support x64, just get a 64-bit installation disc from your manufaturer and install it. (Alternatively, you can download the ISO for it online and install it to a few DVDs or a flash drive)
x86 and x86-64 (x64) are not mutually exclusive. x86-64 is a superset of x86, with 64-bit instructions. Many people still run 32-bit (x86) applications and operating systems on 64-bit processors. The reverse is not possible, though; you can't run a 64-bit system on a processor that only supports 32-bit.
Only if the low level drivers for the Advanced Configuration and Power Interface have been compiled for x64 bit.
I use masm32 x86 compiler with Windows7 x64. It works. No problems.
On there website as: 1 GHz or faster 32-bit (x86) or 64-bit (x64) processor
Windows 7 requires signed drivers for them to install so I added a signature to the drivers and they now work on Windows 7 x86 and x64 :) See the Related Links for more information.
Whether you've met the minimum hardware requirements of a 1Ghz 32-bit (x86) or 64-bit (x64) processor and 512 MB of RAM. and Whether to install it on either a FAT32 or an NTFS partition. A+ 2009 Certification
There aren't really kinds of processors, they have different architectures. There are thousands with the most popular kind of architecture in processors are x86/x64 and ARM.
It's supposed to be in\Program Files. But because it's up to programmers to choose the folder usually even x64 programs put themselves in\Program Files (x86).