[lug] Another GRUB, Linux, Win98, WinXP Question

Is it possible to configure grub, in order to boot Win98 and WinXP
*directly*?

That is, I have Win98 installed on hda1, WinXP on hda5 and linux on
hda6.

Grub let me start either linux or chainload to the bootmanager from
WinXP,
which then gives me the option to start 98 or XP.

I would like to have three entries in grub:

linux -- boots linux
win98 -- boots Win98 directly (no WinXP bootmenu)
winxp -- boots WinXP directly (no WinXP bootmenu)

I googled for that, but I didn't found a "Thats not possible"-answer,
so I think it has to work some how.

I would prefer to use grub for that, but if the WinXP bootmanager can
do the trick, I would use it instead.