also, I got some problems at following steps, during building
*build TclCL and ns
 For Unix:
                 
cd into the TclCL directory
                   
run ./configure ---ok
                   
run make ----make: *** no targets.  stop.
                 
cd into the ns directory
                   
run ./configure ----ok
                   
run make ----make: *** no targets.  stop.
anyway, after building TclCL & ns, what about other comonents like Tcl, Tk and otcl.
I could't find solution at  "http://www.isi.edu/nsnam/ns/ns-faq.html",
I have't much experience on unix system, looking forward for help.
kind regards,
Shahid Sardar,
Pakistan.