thanks But I've followed that using the pictures downloading the extra code etc. and when I try to compile this appears: 1>------ Build started: Project: powder toy coding, Configuration: Debug Win32 ------ 1> powder.c 1>src\powder.c(3): fatal error C1083: Cannot open include file: 'defines.h': No such file or directory 1> main.c 1>src\main.c(30): fatal error C1083: Cannot open include file: 'SDL/SDL.h': No such file or directory 1> interface.c 1>src\interface.c(7): fatal error C1083: Cannot open include file: 'bzlib.h': No such file or directory 1> graphics.c 1>src\graphics.c(2): fatal error C1083: Cannot open include file: 'SDL/SDL.h': No such file or directory 1> air.c 1>src\air.c(2): fatal error C1083: Cannot open include file: 'air.h': No such file or directory 1> Generating Code... ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== WHY!!!!!!!!!!!!!!!!!!!!! I've had this problem for more than a week now so please help!