This is brilliant - boot Windows XP/2003 from a CD without using hard disc at all to allow file recovery etc.
It is dead easy to use:
Run the program,
Insert your Win XP/2003 installer CD
and it produces an ISO file to burn to CD which will boot your system (provided your system supports booting from CD).
It also provides various useful tools etc.
The programme was recommended by Fred Langa (of LangaList fame).