I am actually working on something similar to this myself (except I parse the info and email what I want to msyelf.) If you're wanting to simply grab a webpage from some place on the net and save it, LWP will work perfectly.

use LWP::Simple;

my $url = "www.perlmonks.org";
my $webpage = get( $url );
[download]

Then just write $webpage somewhere, and you've got a "saved" html file. I think this is what you're asking for. EDIT: I don't think LWP::Simple will save header information though, which may or may not be an issue for you.