So I decided to give modding a try, and was gonna try out the Tale of Kingdoms mod, which requires ModLoader. So I dragged the ModLoader files into the minecraft.jar (though it's labeled as just 'minecraft') and deleted the META-INF. I checked to make sure Minecraft would start right as instructed, but after I click login, it goes to a black screen. Any help would be greatly appreciated. Thanks!
rename it back and it should work