Download the file with LWP::UserAgent.

Parse it with XML::Simple or XML::Parser.

XML::Simple example:

  use strict;
  use warnings;
  use XML::Simple;
  use LWP::UserAgent;
  use Data::Dumper;

  my $ua = new LWP::UserAgent;
  my $response = $ua->get('http://server/path/to.xml');
  die "couldn't fetch xml\n" unless $response && $response->is_success
+;
  my $xmlString = $response->content; 

  my @options = (); # put parser options in here.
  my $ref = XMLin($xmlString, @options);
  print Dumper($ref);
[download]

-David