And to clarify my response, it presupposes you are going to try to save them
before you format. As gls858 has stated, if you format, you'll wipe the
drive so any saves or backups must be done prior to the format.
However, if you can't access Windows in order to do so, you could install XP
to a separate partition, assuming one is available and then try to copy your
files from the old setup to the new one. If you don't have an additional
partition, it would require third party software such as Partition Magic,
www.powerquest.com, to create a new partition without losing your current
files, then installing XP to the new partition.