lilo and two os on two hard drives

[marlinswin]

Primary master=/dev/hda=hd0
primary slave=/dev/hdb=hd1

My windows partition is /dev/hdb=hd1. What surprised me a bit was, after the following grub command,

map (hd0) (hd1)
map (hd1) (hd0)

it is still hd1, instead of hd0.

Thanks again for your guidance. Hope the menu.lst I posted may be helpful to someone else.