No. 64-bit Windows will not run on 32-bit architecture, and, in fact, you can't even install it. That said, you can install and run 32-bit Windows on any hardware, both 32-bit and 64-bit.

More and more frequently, users are installing the 64-bit version of their operating system of choice over the less capable 32-bit version.

There's a difference between 64-bit and 32-bit operating systems, and it involves your PC, too.

The problem with running 32-bit software on a 64-bit version of Windows was that 32-bit programs could access only 4GB of system memory even on systems with higher amounts of memory.

One of the more common questions I hear about Vista is which bit version of Windows Vista should one get. Do we go with x86 32 bit edition or x64 64 bit edition?

Your new computer has a 64-bit processor, but your software probably is still 32-bit. Why haven't software developers done more about it?