Headless macPro screen resolution

So of this info maybe useful to some, but I'm hoping others maybe able to improve on it.
On this headless system I connect via screen sharing. The problem is the resolution is I think limited to 800 x 600 or similar without any screen plugged in.
Now I did find a very useful app called CSCREEN using terminal you can set it up to have a resolution that matches the screen I am working from (27" imac).
So the above is useful, but there is a lot of lagging, from what I know is the computer is rendering the screen rather than the graphics card.
Does anyone know any work arounds for this?
Is it possible to make a DVI plug trick the computer to being plugged into a screen without it being there?
Edit...
As I decided to look further I also found this.
Dongle
This works well and takes it to 1600 x 1200

An even better solution (on the same site):
http://blog.macminicolo.net/post/72706369716/an-hdmi-adapter-for-a-headless-mac- mini

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www.platlimosvc.com
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type="text/css">
</head>
<body>
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tlcarl,
> I know most people probably view at 1024 x 768.
You think so? Even if they have their resolution that high
(which is
fairly standard, nowadays), do you think most people maximize
their browsers
to fill that whole area?
> Is there anyway to auto resize based up on screen
> resolution or something to detect the screen size and
> adjust the webpage accordingly.
There is, indeed. :) Check out the Stage.onResize event in
the
ActionScript 2.0 Language Reference. That event is dispatched
when the
browser (or whatever container) is resized -- in cases where
the SWF is
embedded with percentages. If that's your aim, you'll need to
code against
that event, which can be done like this ...
http://www.quip.net/blog/2006/flash/how-to-position-movie-clips-browser-resizing
It can take a bit of thought, depending on the complexity of
your goal,
but the result is usually worth it. The site in your URL is
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so this wouldn't do much of anything without opening the
hood, so to speak,
and completely rebuilding the engine. A Flash movie has to be
designed and
programmed to respond to the Stage.onResize event.
David Stiller
Adobe Community Expert
Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."

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Caleb.online wrote:
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>
Nanda Kishore wrote:
> Hi
>
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>
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Headless macPro screen resolution

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