What tool in windows 2000 and windows xp is used to partition and format a drive?

DOS FORMAT is a good choice. You can also go to My Computer, and right click on the drive and select format from the menu. Or you can go to the Control panel, Administrative Tools, Computer Management, then to Disk Management. From there, you can right click on the drive in question and select format. Outside of these options, you can use Partition Magic, Easeus Partition Manager, and nearly any other partitioning software.