Dear all, I built (compile) cbcExamplesSample2.vcproj (coin-Cbc project) with MS Visual C++ 2005 Express, all seems right. But, how I can run it ! Thank you in advance for any suggestion. Cheers, Hacène. Hacene Ouzia Ph.D student Laboratoire d'Informatique de Paris 6 tel : +33(0) 1 4701 7941