IChat Screen Sharing with Multiple Monitors

I love the new Screen Sharing feature included in iChat 4 as part of Leopard. It is an incredible diagnostic tool that will make it much easier for Mac users to help support each other.
The problem I've run into is that our "standard" config at work is a 15" MacBook Pro with a 23" external display. When doing Screen Sharing from this system, both displays are shrunk to about half their size so they can fit on the main screen of the remote computer. In many cases this works fine, but the images and text can be pretty small on the viewing computer.
Is there any way to control the scaling on the viewing computer? Is there any way on the computer that is being shared to say, only share this monitor?
Just trying to find a way to make the image easier to see on the remote computer.
Steve

Try to run all displays in the same resolution (the settings of the less advanced, smaller display, not the other way around). Additional displays require additional processing, close other applications. Unplug the 23" for now, try it when you've got everything else running. Restart connected computers after you've changed settings on any detectable display. Make sure the bandwidth is sufficient for screen sharing on both ends. (I would use Spaces on the remote computer to create speedy access to applications.) When this works, try to connect the external display.

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    Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

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