Help rez modding login

Hello I'm new to rez modding crossfire and I have a modded crossfire login already but I wanted to make it diffrent more and when I made it diffrent with gimp and saved it it's still the same and I did name it loginbg.

Do you replace the orginal LoginBg inside on your crossfire\rez\ui\ui_login folder?

if not please replace it !

Yes I did replace it and I renamed it to LoginBg