Alguem me ajuda Com esses 2 Erros ?

Olá jente ..
Presiso da ajuda de algum de vocês com esses 2 erros ..
Grato desde Já ..

dllmain.obj : error LNK2001: unresolved external symbol "unsigned long __stdcall Hook(void *)" (?Hook@@YGKPAX@Z)
C:\Users\Info Service Rio®\Desktop\CA Base D3D Menu Selection\CA Base D3D Menu Selection\Release\.Facebook~' WC v1.0.dll : fatal error LNK1120: 1 unresolved externals

C:\Users\Info Service Rio®\Desktop\CA Base D3D Menu Selection\CA Base D3D Menu Selection\Release\.Facebook~' WC v1.0.dll : fatal error LNK1120: 1 unresolved externals

//tooshortmsg.