While experimenting I made this windows like window you can see a picture of it on my blog, it would be great if other people could join in and make things like the menubar, alert window, etc. Best to keep it all markup without using pictures makes it easier to share.
< xml version="1.0" >
<!-- http://techgen.spaces.live.com -->
<root xml:lang="en"
xmlns="http://www.dvdforum.org/2005/ihd"
xmlns:style="http://www.dvdforum.org/2005/ihd#style"
xmlns:state="http://www.dvdforum.org/2005/ihd#state"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>
<head>
<styling>
<style select="id('window')" style:backgroundColor="rgba(202,208,200,255)" style:position="absolute"
style:border="1px solid rgba(202,208,200,255)" style:borderAfter="1px solid rgba(64,64,64,255)"
style:borderEnd="1px solid rgba(64,64,64,255)"/>
</styling>
<timing clock="page">
<par>
<cue/>
</par>
</timing>
</head>
<body>
<div style:position="absolute" style:x="0px" style:y="0px"
style:width="1920px" style:height="1080px" style:backgroundColor="white">
<div id="window" style:width="360px" style:height="600px" style:x="100px" style:y="40px">
<div style:width="100%" style:height="24px" style:backgroundColor="rgba(45,73,176,255)" />
<div style:padding="1%">
<div style:width="98%" style:height="90%" style:backgroundColor="white"
style:borderStart="2px solid rgba(64,64,64,255)" style:borderBefore="2px solid rgba(64,64,64,255)"/>
</div>
</div>
</div>
</body>
</root>

Windows window project
Muzzzy