   PopCap Framework: PakInterface apparently not built, unsure of how to do this
  Due to the two errors I've found while attempting to compile Demo 1 on a properly set up Visual C++ Express:sexyappbase.lib(SexyAppBase.obj) : error LNK2019: unresolved external symbol "public: bool __thiscall PakInterface::AddPakFile(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?AddPakFile@PakInterface@@QAE_NABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) referenced in function "public: virtual void __thiscall Sexy::SexyAppBase::Init(void)" (?Init@SexyAppBase@Sexy@@UAEXXZ)sexyappbase.lib(SexyAppBase.obj) : error LNK2001: unresolved external symbol "class PakInterface * gPakInterface" (?gPakInterface@@3PAVPakInterface@@A)it appears that I need to build the PakInterface library. I'm terrible at building already-existing code, so could someone help me out?   
  What type of project are you trying to compile? It looks like you've got it set up to build a .lib when (if I interpret this correctly) you want to be building an .exe...   