There are a few ways to over clock a computer. You can start with something about your self.
Windows was not designed to run on any particular computer, but rather any computer compatible with the original IBM PC. After IBM stopped making personal computers, Windows was designed to run on any computer with an x86 compatible processor and BIOS.
The internal clock of a computer system is found on the motherboard. It is run by its own, independent battery, causing it to always run, even if the computer is turned off.
yes
No, the computer doesnt have to be switched on.
An Intel processor Apple Computer.
No. It is entirely possible to install and run Ubuntu on a computer without ever having run Windows on it.
No. Windows XP will not run on a computer with a 486 processor.
Mac is computer software that isn't compatible on Windows. You shall have to create a hackintosh (building a computer with specific parts) to be able to run Mac osx. It does work the other way around. Mac can run Windows.
Please formet the computer.
No. It has to be more recent, at least Windows 2000.
You should buy an upgrade version of Windows Vista however your computer if running XP is likely not to be powerful enough to run windows vista. You should run Microsoft Windows Vista Upgrade Advisor before upgrading as this will show you any problems your computer may have running Vista.
You can not legally run Mac OS on any computer not designed by apple.