Hello,
The drawing you see gives 32cm for screen depth, so is too small for my crt, which is why I'm increasing the width slightly.
The attached documents are the sketchup files. I've also posted a pretty poor youtube video which is waiting to be made available...
I think sketchup is great for drafting out ideas, but for actual plans probably not so good as it's quite hard to separate your objects once sketchup has joined them together.
[edit]btw, anyone noticed a bug in this editor (I'm using firefox), when you add attachments the keyboard stops entering text so you have to click Post then re-edit, and if you have an error (I posted the wrong file format), you lose your message content.