I'm trying to figure out how to do something very simple that isn't explicitly shown in any guide.

I have dual boot between Ubuntu 9.10 and Windows XP.
I want it to:
  • Make XP the default (done)
  • not show any menu unless I hold shift

That second one I cannot find out how to do, I'm guessing some script with 40_custom script but I don't know what.

Basically I just want the appearance that GRUB doesn't even exist, it boots to XP without any visual change (currently it shows the GRUB menu which made other users feel Windows did not shut down properly)