I am using the boost libs that are part of the installer, i am NOT building them from scratch
i get the same error:
1>LINK : fatal error LNK1104: cannot open file 'libboost_thread-vc90-mt-gd-1_40.lib'
this doesn't make sense because i have most definitely added the "Additional Library Directories" correctly and the library itself correctly
i tried adding the library to the "Ignore Specific Libraries" list to no avail
Sorry to doubt you, but that error message means what it says - no library with that name is in your search path - double check that a library with that specific name exists, and that the "Additional Library Directories" path points to the actual directory containing that file, not the boost root or something else. HTH, John.