Hey here is what I do. I flashed my xbox to not load the game by default.
I then added these lines to run my games.
Oh yea I removed the xbox dash setting and changed it to this also
MSDashBoard = "d:\default.xbe"
And here is how I launch games
[Menu]
Section "Root"
{
Line "**********************************"
Line "Choos a way to Launch a Game"
Item ">>Non Xbox Live enabled Game<<",ID_MS_Dash
Line "or Insert Live Enabled Game and..."
Item ">>Launch<<",ID_Chameleon_Release_D0,ID_Full_Reboot
Line "**********************************"
You can word it how ever you want to but this should and does work really good.