Tecra R840: Usage of 3 monitors with Port Replicator II

Hey All,
Just got an R840 with the corresponding port rep II, I have hooked up the digital and analogue monitors and was wondering if I could use all 3 displays (including the laptops display).
In the resloution section it shows all 3, but it will only allow 2, is there a setting that is needed to be changed or a different driver as when I extend the display to the 3rd display it says it can't save the action?
Thanks
Corey

Hi
According to the user manual you can use two external monitors simultaneously.
So you can use the monitor connected to VGA port as primary and the monitor connected to DVI port as secondary display.
<img src='http://img84.imageshack.us/img84/4374/advpr.jpg' border='0'/>
As far as I know you can use 3 monitors in connection with a Toshiba Dynadock.

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