Hi ns-users, I installed ns-allinone-2.1b5 version on a linux machine and failed to install xgraph. I need to install it separately. Since I am a beginner to unix, could you please tell me what I should type in step by step. Thank you very much, Cindy Tran Diepchi Tran Phone (216) 433-8861 Fax (216) 433-8705