LWP produces unreadable characters

i am trying to use LWP to fetch material from the following site:

	http://education.yahoo.com/reference
			
using, to pick an example:

	http://education.yahoo.com/reference/dict_en_es/spanish/
		curia;_ylt=A9FJq_FmyklEIWYAkAD2s8sF
		
the result is unreadable characters, tho' lynx does fine with it (tho', of 
course, it doesn't return a true copy of the html), and the stuff looks fine 
when i use the 'view source' function on the page displayed in my browser 
window.

my code:

	$host = 'education.yahoo.com';
	$base = 'reference/dict_en_es/spanish_index';
	$file = 'B;_ylt=Ag1EmmqDVPhfK7pmll28XUX2s8sF';

	%header = (
		'Keep-Alive' => '300',
		'Connection' => 'keep-alive',
		'User-Agent' => 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) 
			Gecko/20050925 Firefox/1.0.4 (Debian package 1.0.4-2sarge5)',
		'Pragma' => 'no-cache',
		'Cache-control' => 'no-cache',
		'Accept' => 'image/png,*/*;q=0.5',
		'Accept-Encoding' => 'gzip,deflate',
		'Accept-Charset' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
		'Accept-Language' => 'en-us,en;q=0.5',
		'Host' => $host,
 		);

	$f="http://$host/$base/$url";
	$res1 = $ua->get($f,%header);
	my $page = $res1->content;

'$page' ends up with unreadable characters.

thanks,

tom arnall
north spit, ca