32-bit handle less hardware and software(amount depends on the operating system). Depending on the Hardware used at the time or planned to change in near future together with the software planned for use; choose your bit.
64-bit handle more data quicker and allow some programs to run with higher graphics.
It does support xp pro x64, vista x64 and so on.
yes
This cannot be answered. This question is confusing and makes no sense.
You should be able to install ether or even both.
It is Compatible up to: Windows 8 x64 1920x1080 x64 OS
It's compatible with Windows XP SP3 (32 bits) and operating systems of 64 bits like Windows XP Pro x64 or Windows Server 2003/2003 R2 are not supported.
Windows XP Professional x64 Edition
Windows XP Pro, XP Home edition, XP media center edition, XP tablet PC edition, XP pro x64
No. Aero is only included in Windows Vista and newer.
Just install ITunes for Windows 7 x64.
Yes, you can. If you have at least 4 Gb of RAM. If you have less than 4 Gb there is no point for you install x64.
There aren't any. Sometimes, a driver for Vista x64 will work on XP x64, so should try that first. If it does not work, you will need to purchase another printer.