Hello, I am new in mailing list.... I run the code for dijkstra-example but seem that the section for dijkstra function does not run. I see in "dijkstra-example-listS.cpp": #if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 How can I define it. I use visual .NET 2003. Thanks, Mahmood NT ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ