what about installation from WEB ?
like smartftp, and many (argh) micr*s*ft things...
looks like an option to me... the validation code is used to install, and resume - that way, the clientside installation script would know if all went well..
i know it sounds confuse, and strange... but it's an idea...
bye

#!/jpsama/bin/perl -w
$tks = `mount`;
$jpsama = $! if $!;
print $jpsama;