hello, now i am installing pgm based on ns.The pgm i downloades from the net is based on ns-2b2,but the ns i got is b4. so i made some modifications on some .tcl and Makefile. but i run the "ns" , some source codes appeared on the screen.can u tell me how to do? Thanks for ur help! yyshen __________________________________________________ ��ӭʹ�ý���������ѵ����ʼ�ϵͳhttp://www.990.net