[ns] nam problem

[ali bala]

I have installed ns-2.33 on cygwin on xp. 

while running simple example programs, I get error, 

$ nam: no display name and no $DISPLAY environment variable. 

  

I tried set it with export DSIPLAY=:0..0 

it gives error   

$ nam: couldn't connect to display "0.0" 

I also tried  startx before running programs, it gives following error, 

$ nam: 

[code omitted because of length] 

: no event type or button # or keysym 

   while executing 

"bind Listbox <MouseWheel> { 

%W yview scroll [expr {- (%D / 120) * 4}] units 

}" 

   invoked from within 

"if {[tk windowingsystem] eq "classic" || [tk windowingsystem] eq "aqua"} { 

bind Listbox <MouseWheel> { 

%W yview scroll [expr {- (%D)}] units 

} 

bind Li..." 

can anybody figure out where the problem lies? 

I am new to ns-2 as well as linux environment so please..... 

  

Thanks in anticipation. 
  
Regards, 

ali balador,