I can't offer much help here, other than a couple of observations about the VGA out on this thing..
1) I do not need to plug my monitor in first at all. I can plug it in at any time and it'll work dandy. (note: I can also use composite out at the same time. See note 2)
2) Whether or not composite out will work at all also depeneds on the current screen resolution. For NTSC, this usually means 640*480*24bpp, at 60hz. (Granted, the iBook SE Firewire I had at work would do 800*600*24bpp at 60hz interlaced, but damn that was ugly)
3) Also, disabling multiple monitor support works fine if you don't intend to ever use the composite out feature.
That's my $0.02, good luck!