Hi everybody, First I want to point out that I am very immature with Boost library, and my problem may seem very simple for you; but I would be grateful if you help me. I am trying to use Graph library especially read_graphviz function to load a DOT file. I accomplished the following steps in Visual C++ 7.1 1. Download boost_1_33_1 2. Download bjam file for windows 3. Building libbgl-viz.lib by run "bjam "-sTOOLS=vc-7_1"" command in \boost_1_33_1\libs\graph\build folder 4. Setting path for libbgl-viz.lib and other Header file in the proper dialog Tools>Options>VC++ Directories 6. At this point I try to Build and compile one of Garaph example, cc-internet.cpp, I got a linker error for read_graphviz. Any help would be appreciated. Hadi Khani Hadi Khani --------------------------------- Get your own web address for just $1.99/1st yr. We'll help. Yahoo! Small Business.