HELLO:

SPFDISK http://mail.ht.net.tw/~spferng/
is another good choice.

1.create a primary partition and install your OS in the primary partition.
don't forget to set the new partition active.
2.boot your system using a win9X boot disk.
3.use spfdisk to create another primary partition and make the
origional partition hidden.don't forget to set the new partition active.
4.install your the other OS in the new partition.
5.reboot your system using a win9X boot disk.
6.in spfdisk you can make a boot menu and you can install the menu
in MBR or the third partition etc...
7.reboot and you will see your menu.