Dual-Head Aluminum 23" display question

[Paul Butler]

Has anybody got an XF86Config file that get's Dual-Head Aluminum 23" 
Apple displays working?

I've installed YDL v4.0.91 and both monitors now power up.  The 
XF86Config file that get's generated from the Display setup looks like 
it ought to work, but still only get main screen with content, second 
screen all white.

Thanks