you should stop putting yourself down. its one thing to not know, but making fun of yourself is not really cool man. anyways...to do what you want the easy way: goto www.bootdisk.com
and download & make the windows millenium boot diskette.
put the floppy diskette in and boot from it. select the "boot with CD support" option.
if any of your volumes (primary partitions, logical drives) on the disk are currently formatted with NTFS you must get into the DOS a:\ prompt and run FDISK to delete the primary active partition using FAT32. the reason why is because an NTFS volume cannot be accessed by DOS. if your volumes are FAT32 than you can skip the deleting process and just do a simple Format operation so you can install win98/ME.
if you have a winXP CD you can boot with it and just delete and format just like i told you above. all of this is much easier than it sounds. goto www.computerhope.com
and read about the format command and use their FDISK simulator. all is explained there on their site.