Yea just format the harddrive and xp will take over and remove vista
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 DO NOT have to wipe your hard drive or "downgrade" to run windows XP on a vista computer. Download and install Microsoft Virtual PC. its free and will allow you to run another operating system in a window of the current one you are running. You can have both!
wikipedia.org/wiki/Kernel_%28computing%29 A computer kernel is basically the "big brother" application and manages all other applications currently running on your computer, and controlling their access to cpu, ram, hard drive, and any devices currently connected (through device drivers of course). There's never more than 1 kernel running on your computer at a time, however if you have multiple operating systems installed on your computer they each have their own kernel (windows vista, windows 7, windows xp, linux, mac, etc...). If you install and run a virtual machine then another kernel will run in that and you could technically have multiple kernels running on your computer.
a windows vista is an upgrade for a normal windows it can still do everything but it is just a bit more high tech
you dont, get a new computer
You can install and run Microsoft Office in Linux, yes. You will need to install it separately, however; you can't just run the programs off your Windowspartition in Linux.
If the computer running Windows 7 does not have a flash player install, then the player can be downloaded and installed from Adobe Flash main website.
After you install a device or update a driver for a device on a computer that is running Windows Vista or Windows 7, the operating system may not start.
Virtualbox is a program that you can install and will enable you to install another operating system on your computer. It will share the ram and CPU power of your other OS. For example if you are running Linux and install virtualbox you can then install windows (any version) and run it as if it were a windows computer, You could install and run any windows software. This is one example of using a virtual machine. At this link you can download the program and find the documentation and some screenshots, etc. http://www.virtualbox.org
You cannot format the drive / partition that Windows Vista is currently running on while it is running. You will need to boot from either a partition utility disc, such as GParted, or the install disc of the operating system you want to install, and format the drive from there.
Windows is the operating system on a Microsoft computer or an Apple computer running windows drivers. Without windows your computer would not work.
It's called a "Dual-Boot" installation. When you start your computer, you will be asked to choose which operating system you want to use.