Initially I did it by hand, it didn't take all that long actually, just had each page open in a new tab in firefox. But after doing that once I didn't want to have to do it again, so I wrote a perl script that can download all of them automatically. 
It is not exactly fast(has to look up the fastest set for a given track/car then download it, so it is waiting on the http requests a lot), but you can just let it run and it will get them all for sure. I ran it earlier and got 133 reverse and 242 standard setups. Which is wierd because I got 245 earlier doing it by hand...
The script assumes you have a setups folder at the same level as the script to put them in.
# This is a script to download all of the current fastest times as held by the team Inferno setup field
#
# The url to get the page is http://setupfield.teaminferno.hu/?p_section=setupdetails&p_config_id=[TRACK INDEX]&p_car_id=[CARINDEX]&p_version=S2
# to download an actual setup it is http://setupfield.teaminferno.hu/setupdownload.php?p_setup_usage_id=[SETUP ID]
#   so have to lookup on the track/car page to find the fastest setup id, then download it
#
#  Brandon Green 1-2-06
$SetupfieldURL="http://setupfield.teaminferno.hu/";
use File::Basename;
use Win32::Internet;
$|=1; #force immediate output of print command(no waiting for endline to output progress)
#These were found by looking at the html code of the setupfield page
@CarNames=('XF GTi','XR GT','XR Turbo','RB4','FXO','LX4','LX6','MRT5','UF 1K','RA','FZ50','FOX','XF GTR','UF GTR','F08','FXO GTR','XR GTR','FZ50 GTR');
@CarIndex=( 9,       10,     11,        12,   13,   14,   15,   16,    17,     18,  19,    20,   21,      22,      23,   24,       25,      26);
@TrackNames=('BL GP','BL RX','SO Classic','SO Sprint1','SO Sprint2','SO Long','SO Town','FE Club','FE Green','FE Gold','FE Black','FE RX','FE RX Green','AS Cadet','AS Club','AS Nat','AS Hist','AS GP','KY Oval','KY National','KY GP','WE Int','Drag','Drift');
@TrackIndex=(1,3,5,8,9,7,43,10,11,12,6,13,14,25,27,29,31,33,35,37,39,41,45,46);
@RevTrackIndex=(2,4,15,18,19,17,44,20,21,22,16,23,24,26,28,30,32,34,36,38,40,42);
$cur_name=0;
$inet = Win32::Internet->new();
#!!
#  to download reverse track setups this should be changed to RevTrackIndex
#!!
foreach $track (@TrackIndex) 
{
  print "Downloading setups for track ".$TrackNames[$cur_name]."\t";
  
  foreach $car (@CarIndex)
  {
    print ".";
    #get the page that lists all of the setups for this track/car combo
    $webpage = $inet->FetchURL( $SetupfieldURL."?p_section=setupdetails&p_config_id=".$track."&p_car_id=".$car."&p_version=S2" );
    #split up the individual lines of the html file
    @filedata=split(/\n/,$webpage);
    
    foreach $line (@filedata)
    {
      #search every line to see if this line has the setup id on it
      $pos=index $line, "setupdownload.php";
      #if this is the line that has setup id on it
      if ($pos>0)
      {
        #get the setup id from the line
        @lineparts=split(/></,$line);
        $filepath=substr($lineparts[0],$pos,-1);
        
        $inet->OpenURL($url, $SetupfieldURL.$filepath);
        #print "error was ".$inet->Error()."\n";
        #print "data available ".$url->QueryDataAvailable()."\n"; #this should be 132 bytes!
        #print "error was ".$inet->Error()."\n";
        #get the filename of the setup
        $filename = basename($url->QueryOption(33));
        $filename=substr($filename, 0, -7).substr($filename,-4); #for some reason it has that pesky [1] right before the .set
        #save the setup
        open(OUTPUTFILE, ">./setups/$filename") or die "Couldn't open ./setups/$filename\n";
        binmode(OUTPUTFILE);
        print OUTPUTFILE $url->ReadEntireFile();
        close(OUTPUTFILE);
        $url->Close();
        
        #only get the first setup, so break out of foreach $line (@filedata) loop
        last;
      }
    }
  }
  print "\n";
    
  $cur_name++;
}