Hi, all, When I installed ns2-2.27 in Redhat9, I encountered a problem and failed to install successfully. I pasted the problem here. Hope you can offer steps to install successfully. .... /usr/include/sys/stat.h: At top level: /home/mian/ns-allinone-2.27/tk8.4.5/generic/tk3d.c:1134: storage size of `shiftT able' isn't known /home/mian/ns-allinone-2.27/tk8.4.5/generic/tk3d.c:31: warning: `BorderInit' dec lared `static' but never defined /home/mian/ns-allinone-2.27/tk8.4.5/generic/tk3d.c:36: warning: `Intersect' decl ared `static' but never defined /home/mian/ns-allinone-2.27/tk8.4.5/generic/tk3d.c:39: warning: `ShiftLine' decl ared `static' but never defined {standard input}: Assembler messages: {standard input}:697: Error: symbol `dy' is already defined {standard input}:703: Error: symbol `dx' is already defined {standard input}:750: Error: symbol `q' is already defined {standard input}:756: Error: symbol `p' is already defined {standard input}:762: Error: symbol `q' is already defined {standard input}:768: Error: symbol `q' is already defined make: *** [tk3d.o] Error 1 tk8.4.5 make failed! Exiting ... For problems with Tcl/Tk see http://www.scriptics.com I am looking forward to your immediatly response. Thank you inadvance! Regards, Mian __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com