PLoP Boot Manager can launch from floppy, CD, network or existing boot manager like LILO, GRUB, Windows boot menu and DOS, once launched you can use PLoP to boot from USB and CD-ROM even if BIOS does not support these options.
To use PLoP from existing Windows Boot Manager on Windows 2K, XP and VISTA, Download PLoP Boot Manager and follow the procedure described inside the zip file or at the official website here .