Hello masn
.486 .model flat,stdcall option casemap:none ; case sensitive ;http://www.popbook.com/wbbs/topic.asp?l_id=5&t_id=2294 include \masm32\include\windows.inc include \masm32\include\kernel32.inc includelib \masm32\lib\kernel32.lib include \masm32\include\user32.inc includelib \masm32\lib\user32.lib .const MsgBoxCaption db "Iczelion Tutorial No.2",0 MsgBoxText db "Win32 Assembly is Great!",0 .data .code start : call main invoke ExitProcess,eax; main proc invoke MessageBox, NULL, offset MsgBoxText, addr MsgBoxCaption, MB_OK; main endp end start