I am new to windows programming and recently purchaced "Tricks for Windows Game Programming..." My problem is after going through the code to create a window, it compiles but then gives 2 errors when linking. Here they are: LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol_main Debug/FirstWindow.exe : fatal error LNK1120 : 1 unresolved externals Error executing link.exe. I''m sure that I am just missed some stupid mistake. For a look at the code you can view the thread by "Taralieth." My code is the same (we have the same book, go figure). Here are my includes though: #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <windowsx.h> #include <stdio.h> #include <math.h> Thanks for your help.