Tom, This might not be as fancy as some of the other suggestions, but it will work for both domains.

#!/usr/bin/perl

$data = "<tr><td id=tpa1 nowrap bgcolor=#e5ecf9 height=40 onMouseOver=
+ss('go to www.mysite.com') onMouseOut=cs() class=ch onClick=ga(this,e
+vent)><a id=pa1 href=/pagead/iclk?adurl=http://www.mysite.com&sa=l&ai
+=BRqXfIssAQqj8EcfeRIXF7OQD2sdO4pmhjQGsqeEKgPEECAAQARgBKAI4AECKFkifOZg
+BgkugAZDsuf8DyAEB onMouseOver=return ss('go to www.mysite.com') onMou
+seOut=cs()><b>MySite</b> wine merchant</a><font size=-1><br><span cla
+ss=a>www.mysite2.com</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Award 
+winning wines at great prices&nbsp;&nbsp;Money back satisfaction guar
+antee</font></td><td id=spa1 class=ch bgcolor=#e5ecf9 height=40 align
+=right valign=top onMouseOver=ss('go to www.mysite2.com') onMouseOut=
+cs() onClick=ga(this,event)><font size=-1 class=f>Sponsored Links</fo
+nt></td></tr>";

($domain1) = $data =~ /=ss\('go to (\S*)'\).*$/;
($domain2) = $data =~ /^.*=ss\('go to (\S*)'\)/;

$domain1 = "http://".$domain1;
$domain2 = "http://".$domain2;

print "Domain1 :: $domain1\n";
print "Domain2 :: $domain2\n";
[download]

- Justin