I've updated Java and all. I'm getting this:
<jnlp spec="1.0+" codebase="http://www.havenandhearth.com/java/">
<information>
<title>Haven and Hearth</title>
<vendor>Seatribe</vendor>
<homepage href="http://www.havenandhearth.com/" />
<description>The Haven game</description>
<icon href="icon.gif" />
<icon href="splash.gif" kind="splash" />
</information>
<security>
<all-permissions />
</security>
<resources>
<j2se version="1.5+" max-heap-size="256M" />
<jar href="haven.jar" />
<jar href="haven-res.jar" />
<property name="haven.errorhandler" value="on" />
<property name="haven.defserv" value="sh.seatribe.se" />
<property name="haven.fullscreen" value="off" />
<property name="haven.authuser" value="Baibiscuit" />
<property name="haven.authck" value="FCC50155061F9157EC9908EE3EFDC4FAE2E379946600F14F62218290839E973D" />
<extension name="jogl" href="http://www.havenandhearth.com/java/jogl/jogl.jnlp" />
</resources>
<application-desc />
</jnlp>