my $conf = {
 scriptpath => {
   R-Solaris => '....',
   R-Linux => '....',
   UNC-Windows => '....',
   ...
 },
 confdir => {
   R-Solaris => '....',
   R-Linux => '....',
   UNC-Windows => '....',
   ...
 },
 ...
}

##</code><code>##

my $conf={};
sub conf {
  $conf{$_[0]}={
    R-Solaris => $_[1],
    R-Linux => $_[2],
    UNC-Windows => $_[3],
    ...
  }
}
conf('scriptpath','...',...);
conf('confdir',........);