Windows XP Pro 64 has attracted little interest among manufacturers,
developers and users.
With the flop of Windows XP Pro 64-bit, users ask more questions about Windows Vista. Because if many manufacturers believe that Windows Vista 64-bit is the future, availability too low 64-bit applications is an important consideration. As yet, a platform 64-bit Windows Vista is only useful if you plan to use your PC for "professional". Or even as a mere amateur or user to perform editing professional quality video, creating 3D (images, etc..), Subject to finding adequate and applications optimized for 64 bits.
The installation of a hardware component or device that requires the use mandatory 64-bit drivers signed by Microsoft. Although it is still possible to use its usual applications pending an update or a new version optimized for 64 bits. Since Microsoft has developed 32-bit Windows on Windows 64 bit (WOW64), a sub-system in the x64 versions XP, 2003 x64 and Windows Vista x64 running at startup, and to run most of the 32-bit applications (16-bit applications are no longer supported) in a 64-bit.
Provided that these applications do not install modules or core unsigned drivers. The Kernel Patch Protection technology found only in 64-bit versions of Windows, requiring the installation of 64-bit drivers signed by Microsoft.
You should therefore make a very strict attention to the availability of 64-bit drivers for your components and peripherals.