Dead man talking!

I use FC1 along with Windows ME, NT(2000) and XP on the same hard drive but different partitions. During installation, I was presented by an option to choose the default boot OS, and along with htis, there was an option to add other partition/OS info to boot directly. I figured the right partitions allotted to XP and NT, while ME of-course was on primary DOS, and continued with the installation. But they didn't work, and just ME could be loaded from the GRUB window. Is there a way to boot these systems directly from the GRUB window.

How did you do multiple boot before FC1 was installed?

I had a menu like option similar to that of grub with the default as the highest version (XP). After installing FC1, I am still seeing this menu once I choose to boot Windows from the GRUB's OS choice menu

Then all 3 of your Windows is using that one nt os loader.
Unfortunately you won't be able boot 2k or XP directly using GRUB, only through that menu.
Do you have a bootsect.dos in c:\?

Didn't quite notice it (bootsect.dos), but does it help in achieving my goal?

Ok with that file you will be able to boot WinME directly in GRUB without going through that menu, using something like this in /boot/grub/grub.conf:
There's nothing much you can do about direct booting your win2k or xp, unless you reinstall them in a particular way.

One thing you can do is use the Windows bootloader instead.