I'm not sure where to find boost_regex_vc7_mssd.lib and the corresponding library for VC8. Can anyone let me know where to get the above libs from ?

I believe that particular mangled name is from a very early release of the library: I suggest you get a more recent snapshot of Boost and follow the getting started instructions: http://www.boost.org/doc/libs/1_38_0/more/getting_started/index.html HTH, John.