problem with environment variable

[FLAHERTY, JIM-CONT]

Here is my code 
 
 
 
#########################
# Drop us an E-mail
#########################
$hostadd = $ENV{REMOTE_HOST};
 
print "Host : $hostadd\n";
 

 
But it isnt working ,   all I see is 
 
 
Host: 
 
 
 
What am I doing wrong ?
 
 
Thanks in advance