my $module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/plans_config.pl") {
$module_found=1;}
}
if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "Unable to locate <b>plans_config.pl</b>!  It should be in the same directory as plans.cgi!\n";
} else {require "plans_config.pl";}



$module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/CGI") {
$module_found=1;}
}

if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>CGI</b>!\n";
} else {
use CGI;}

$module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/CGI/Session") {
$module_found=1;}
}

if ($options{sessions} eq "1") {
  if ($module_found == 0) {

    $fatal_error = 1;
    $error_info .= "unable to locate required module <b>CGI::Session</b>!\n";
  } else {
require CGI::Session;}
}

$module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/Error.pm") {
$module_found=1;}
}

if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>Error.pm</b>!\n";
} else {
use Error qw(:try);}


$module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/CGI/Carp.pm") {
$module_found=1;}
}

if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>CGI::Carp</b>!\n";
} else {
use CGI::Carp qw/fatalsToBrowser/;}

$module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/Time") {
$module_found=1;}
}

if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>Time.pm</b>!\n";
} else {
use Time::Local;}

$module_found=0;
foreach $temp_path (@INC) {
  if (-e "$temp_path/IO.pm") {
$module_found=1;}
}
if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>IO.pm</b>!\n";
} else {
use IO::Socket;}

if ($fatal_error == 1)  { # print error and bail out
  &fatal_error();
}

$module_found=0;
foreach $temp_path (@INC) {
  if (-r "$temp_path/plans_lib.pl") {
$module_found=1;}
}
if ($module_found == 0) {
  $fatal_error=1;
  $error_info .= "Unable to locate <b>plans_lib.pl</b>!  It should be in the same directory as plans.cgi!\n";
} else {require "plans_lib.pl";}


# multi-language stuff
if (defined $options{language_files}) {
  my @language_files = split(',', $options{language_files});

 # pull in language files
  foreach $language_file (@language_files) {

    $module_found=0;
    foreach $temp_path (@INC) {
      if (-r "$temp_path/$language_file") {
$module_found=1;}
    }
    if ($module_found == 0) {
      $fatal_error=1;
      $error_info .= "Unable to locate language file <b>$language_file</b>!  It should be in the same directory as plans.cgi!\n";
    } else {require $language_file;}
  }
}

return 1;