What have you tried? What worked? What didn't? We're happy to help design and debug, but we won't do your work for you.

I'm not familiar with 'HP OVO product' and so don't know the necessary reporting formats, and didn't see any affiliated modules on CPAN. I also don't know what definition of megabyte you are using. I would expect -s will be useful, as will opendir and readdir. That chunk may look something like (untested):

my $dir = 'somewhere';
opendir my $dh, $dir or die $!;
while (my $file = readdir $dh) {
    print "Too big: $file\n" if -s "$dir/$file" > 1024**2
}
[download]

You may also want to look at File::Find.