Hi, I see a lot of people have been having problems statically-linking Boost.Threads with Visual Studio .NET 2003. For what it's worth, I just got it to work, and here's what I did: 1) Created and entered a C:\Libraries folder C:\> Mkdir c:\Libraries C:\> cd c:\Libraries 2) Checked out the latest code from CVS using: (From http://boost.org/more/getting_started.html) cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/boost login [Hit <return> when it asks for a password] cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/boost checkout boost cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/boost logout 3) Installed Boost.Build and Boost.Jam 4) Built everything: C:\Libraries\Boost> bjam --prefix=c:\Libraries\Boost install 5) Launched Visual Studio .NET 2003 6) Created a new Win32 Console Project (CTRL+SHIFT+N) and accompanying solution named BoostTest 7) Configured the wizard to create an Empty Project (click "Application Settings", check "Empty Project", click "Finish") 8) Configured the project to use the "Multi-threaded Debug Runtime Library" (Project::BootTest Properties, C/C++::Code Generation::Runtime Library) 9) Configured the project to search for the Boost include files (Project::BootTest Properties, C/C++::General::Additional Include Directories) by adding: C:\Libraries\boost\include 10) Created a new file named BoostTest.cpp (CTRL+SHIFT+A, click "C++ File", type "BoostTest.cpp" in the Name field, click Open) 11) Inserted the single include line: #include <boost/thread/thread.hpp> 12) Compiled (CTRL+F7) 13) It works! So yes, that all seems pretty obvious. But it took me a long time to get working. I was unable to get anything with a Boost.Thread header to compile *at all* (with any combination of static/dynamic runtimes, #defines, and code hacks) using the 1.31.0 release currently available for download via SourceForge. But it works now, and I'm proof that it can be done. Good luck! -david