VC6.0的连接异常提示信息

VC6.0的连接错误提示信息。
这是什么意思：

--------------------Configuration: BuildBin_GUI - Win32 Debug--------------------
Linking...
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex
Debug/BuildBin_GUI.exe : fatal error LNK1120: 2 unresolved externals
执行 link.exe 时出错.

BuildBin_GUI.exe - 1 error(s), 0 warning(s)

------解决方案--------------------
Libraries

LIBCMT.LIB Multithread static library, retail version 
MSVCRT.LIB Import library for MSVCRT.DLL, retail version 


修改编译选项为:
/Mtd
/MDd
------解决方案--------------------
好像没那么简单,呵呵.