Here are set_cookie and get_cookie subs that I have used in the past. I stole these from something, but I don't remember what. Please feel free to correct them if anything is wrong with them.

######################################################################
+#####
# Get_cookie - Gets all the cookies and returns them in a hash
# Usage: my %cookie = &get_cookie;
######################################################################
+#####
sub get_cookie {
  my @cstuff = @_;
  my ($cookie, $value, $char, %cookie);
  my @Cdec = ('\+', '\%3A\%3A', '\%3D', '\%2C', '\%25', '\%2B', '\%26'
+,'\%3B');
  my %Cdec = ('\+',' ','\%3A\%3A','::','\%3D','=','\%2C',',','\%25','%
+','\%2B','+','\%26','&','\%3B',';');
  if ($ENV{'HTTP_COOKIE'}) {
    foreach (split(/; /,$ENV{'HTTP_COOKIE'})) {
    ($cookie,$value) = split(/=/);
      foreach $char (@Cdec) {
        $cookie =~ s/$char/$Cdec{$char}/g;
        $value =~ s/$char/$Cdec{$char}/g;
      }
      $cookie{$cookie} = $value;
    }
  }
  return %cookie;
}

######################################################################
+#####
# set_cookie - Sets a cookie.
# Usage : set_cookie('Name',"Value",?) ? = 0 or 1. 0 = temp, 1 = perma
+nent
######################################################################
+#####
sub set_cookie {
  my @cookie = @_;
  my ($cookie, $value, $type, $char);
  my @Cenc = ('\;','\&','\+','\%','\,','\=','\:\:','\s');
  my %Cenc = ('\;','%3B','\&','%26','\+','%2B','\%','%25','\,','%2C','
+\=','%3D','\:\:','%3A%3A','\s','+');
  my $header = '';
  for (my $i = 0; $i <= $#cookie; $i = $i + 3) {
    ($cookie, $value, $type) = @cookie[$i .. $i+2];
    foreach $char (@Cenc) {
      $cookie =~ s/$char/$Cenc{$char}/g;
      $value =~ s/$char/$Cenc{$char}/g;
    }
    $header = 'Set-Cookie: ' . $cookie . '=' . $value . ';';
    if ($type == 1) {
      $header .= ' expires=Friday, 31-Dec-2010 00:00:00 GMT; path=/';
    }
    print "$header\n";
  }
}
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