Sorry
The "resolution thing" is not a problem in the main gnome version of Daryna
The Daryna KDE is actually forked off Kubuntu, so I don't know...
Will try to remember to reboot into Daryna KDE (it's on the same computer while Bianca KDE is on another)
I actually don't even have a single resolution in my xorg.conf (nvidia card)
As for editing grub
If you want to edit menu.lst
If you want to move grub to another distro you don't "edit"
see the wiki
http://www.linuxmint.com/wiki/index.php ... _your_grub
which can also be used to move grub