Not that I'd be aware of such a program..but it's really as simple as editing a text file
/boot/grub/menu.lst
You need to be root to do this, so open a console and do
where
editorname is your favourite text editor, like
gedit for example. Now once the editor is open, open
/boot/grub/menu.lst with it and scroll down the file; at the bottom you should see a few lines where Grub describes your Windows operating system (I think there are something like four lines there, but you'll see which ones they are, they're one after another; the first
title line has the entry title Windows XP (for example) in it, so that's the first line and the rest are below that).
Now cut the lines describing Windows and scroll up the file. Somewhere on your way up you'll see a line telling you "here starts the automatic kernel list" (not exactly with those words, but you can't miss). Go a few lines above that, search a place where there is no text (a blank line) and paste the Windows-lines (those you cut'ed) there. Fine. Now your Windows entry should be on top of the list; all the Linux kernels are added below (so this config won't change even when you upgrade your kernel); because the default option is the first in the list (0th), your Windows now gets loaded by default, and Linux only if you choose to do so. Save and exit the editor.
