How do I get GRUB_HIDDEN_TIMEOUT=0 behavior when GRUB_DISABLE_OS_PROBER=false?

view story

http://askubuntu.com – I have a question about the grub2 implantation in Ubuntu 12.04. I have a dual boot system with windows 7, Ubuntu as the primary OS. When I have #GRUB_DISABLE_OS_PROBER=true in my /etc/default file, grub boots to Ubuntu without showing a menu, and shows the menu when I hold down shift, however, the menu does NOT have my Windows 7 boot drive as an option. If I have #GRUB_DISABLE_OS_PROBER=false, Windows 7 shows up in the grub menu, but the grub menu is always shown on system start, even though GRUB_HIDDEN_TIMEOUT=0 and shift is not held. Is there a way to have the OS prober turned on, (HowTos)