Yes. "Vista ready" implies the PC has no operating system installed already. It will have a higher specification of components (i.e ram, hard drive, graphics card etc) than is required to run XP.
No. Windows XP will not run on a computer with a 486 processor.
Yes, you can.
If you have perform a Custom install from windows xp to windows 7. You can speak to a technical support at 1 800 936 5700. They will guide you in reverting back to windows xp using windows.old folder in your computer. However, If you have perform a clean format install, then, Install windows xp using windows xp installation disc...
Yes.
poo eater
i think when you do the install, windows itself will check what you have and look for updates, it will give you the missing components
How to install the IIS on Windows XP
Yes.
You will have gone an entire month without XP on your computer.
As long as the computer meets the system requirements for Windows Vista, yes.
The amount and configuration of memory is dependent not on Windows XP, but on the motherboard / chipset.
if your looking a fast computer 98. if you want to install some of the latest software and hardware, i recommend windows xp