Hello Sir/Madam, In using ns-allinone-2.31 under cygwin on Windows XP. I have made changes in tora.cc file.. Then i executed make command successfully with no errors.. But the changes are not picked by tora.tcl.. Can anyone please tell me where am i wrong? What should be done so that tora.tcl start picking the changes??? Please help me... Thanks and Regards, Manpreet Grewal..