XP Professional OS backup

Hiya! I have a quick question….Usually in an operating system, the operating system has a backup in a file folder incase your system disk is lost. I do not have a disk for my preinstalled copy of Windows XP Professional, but I am not sure where tolocate the file folder where it should be backed up. For Win95 it’s in C://utils//win95 I think, or something like that, and for Win98 it’s C://win98…does anyone know where I can locate the Windows XP folder? Please post a reply. Thanks a ton.