Hello,ns-users, I can not find the Makefile.in in my source code of ns-allinone-2.1b8a. There is a file named makefile.vc. I edited it to add my object file, but it seemed not work. What is the difference between *.in and *.vc ? Chen Shangbing £¨³ÂÉбø£© PhD Student of Zhejiang University. China £¨Õã½´óѧ£© sbchen@iipc.zju.edu.cn 0571£87951970£407