I have set my project up correctly as far as I can tell. I have it as multithreaded and I linked it to the dplay.lib and the winmm.lib. I''ve included DXUtil.h and dplay8.h in my source files, but no matter how I organize it I still get the same linker errors: Linking... CServer.obj : error LNK2001: unresolved external symbol _CLSID_DP8SP_TCPIP CServer.obj : error LNK2001: unresolved external symbol _CLSID_DirectPlay8Address CServer.obj : error LNK2001: unresolved external symbol _IID_IDirectPlay8Address CServer.obj : error LNK2001: unresolved external symbol _CLSID_DirectPlay8Server CServer.obj : error LNK2001: unresolved external symbol _IID_IDirectPlay8Server libcpmtd.lib(xmbtowc.obj) : error LNK2001: unresolved external symbol __CrtDbgReport Debug/SCServer.exe : fatal error LNK1120: 6 unresolved externals Error executing link.exe. All of my initialization code (which I assume is what is causing the errors) is using the DPServer example in chapter 10 as a reference but wrapped in a class (CServer). Any input on these stupid linker errors would be greatly apperciated.