Root can't find a setting, please help!

[badblue1]

I set the back button to kill an app a couple weeks ago,now i can't find the setting. I want to set it back because it's so touchy and i keep forgetting about it,I'll be on forums and press it, takes me to home screen. This is getting kind of annoying.
please help!
TIA!

 

[kwknott]

Settings > Applications >Development

 

[badblue1]

Thanks man, i think that's the only place i didn't look. You don't know how aggravating that was unless you used that setting. I liked using it but it was to sensitive.
THANKS AGAIN!