OK, ok, ok...I understand now....
I re-read http://www.infocopter.com/perl_corner/perlre.htm
and http://lists.w3.org/Archives/Public/public-qt-comments/2003Jul/0091.html

I also got both solutions working. Here is majita's
solution which I just figured out:

if ($text =~ /^Total Datafile Size MB(-+)\s+(\d.+)/s) {
print $2;
}

Again, thanks both for helping me out.

mohammed