how to format computer? win xp

Hi i forget how to format the computer. Can somebody teach me how real fast>

put a magnet on the hard disk or google for killdisk or reformat your hard disk, using your original win xp disk

Magnets destroy a hard disk, they don't format away data.

i go to bios, then go where to format?

i have formatted some com before but this one has a phoenix bios….i dunno how to fomat….i need to know how to format,,,not how to install

Read the screen when it boots up. It tells you to press some button(s) to change the boot order in order to boot from CD/DVD drive.

thanks.