For those interested in attending the "Implementing a mini Boost.Fusion using C++0x" workshop, we suggest that you install a compiler capable of handling some of the C++0x features discussed today, especially decltype, variadic templates, and rvalue references. GCC 4.3 is one such option. For Windows users: MINGW is the fastest way to get GCC 4.3. Here are the steps: 1) Download the automated installer for MINGW, here: http://sourceforge.net/project/showfiles.php? group_id=2435&package_id=240780 When running the installer, you only need to install the "minimal" set of files. 2) Download the "core" and "g++" GCC 4.3.0 binaries from here: http://www.tdragon.net/recentgcc/ 3) Unzip the two files over top of your MINGW distribution, which replaces the default (ancient) compiler with GCC 4.3. 4) Try to compile a simple problem, e.g., "static_assert(false, "It works!");" with c:\mingw\bin\g++ -std=c++0x foo.cpp For Mac users: MacPorts has a version of GCC 4.3, which should be installable with: sudo port install gcc43 Fink also has a version of GCC 4.3 in the unstable distribution. Once you've configured for the unstable distribution, use: fink install gcc43 For Linux users: You can build GCC 4.3 on your own (get the source at gcc.gnu.org), or perhaps be lucky enough to find a binary for your particular distribution. - Doug