[boost] Help me! Where is the file "libboost_regex-vc6-mt-sgd-1_32.lib"?

I am using Windows XP + VC6. My compiler complained about "LINK : fatal error LNK1104: cannot open file "libboost_regex-vc6-mt-sgd-1_32.lib" when using "Debug Multithreaded" run-time library! I alos got a similar error with "Multithreaded" run-time library, but OK with other types of run-time librares. What is the matter? plase help me. Thank you very much!!