Not sure if you still need it, but below is my code to get tightVNC to work. It does work, but it'd definitely fuzzy and the lag is on the border of acceptable.
<html>
<head>
<title>TightVNC Applet</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<!--
Notes:
1) << CODEBASE >> is a system value that will get replaced at the time the applet is launched. Please do not modify this value.
2) Please modify the remaining values as needed.
3) Please make sure all attribute names/values are enclosed in double quotes.
-->
<body>
<applet code="VncViewer.class"
codebase="<< CODEBASE >>"
archive="classes/VncViewer.jar"
width="1024" height="768"
name="TightVNC" align="top">
<param name="code" value="VncViewer.class">
<param name="codebase" value="<< CODEBASE >>">
<param name="archive" value="classes/VncViewer.jar">
<param name="cabbase" value="">
<param name="name" value="TightVNC">
<param name="width" value="1024">
<param name="height" value="768">
<param name="align" value="top">
<!--
Please specify additional params here after the comment.
<param name="paramname" value="paramvalue">
-->
<PARAM NAME="PORT" VALUE=5900>
<PARAM NAME="Scaling factor" VALUE="auto">
<PARAM NAME="HOST" VALUE="<<HOST>>">
<PARAM NAME="Open new window" VALUE="YES">
<PARAM NAME="Show controls" VALUE="NO">
</applet>
</body>
</html>
