where is this stored ? im guessing its in shell32.dll, but i cant find it

Maybe Winlogon.exe or msgina.dll

i tried msgina already , & i just tried winlogon , but i still cant find it

Have you tried shell32.dll dialog 1089?

That dialog is the main log off one but my one has been changed for a while and I can't remember what the original windows one looks like. If not then try msgina.dll because the shutdown dialog lives there.

I've stumbled across it in msgina.dll. It's dialog 2250.