T43 external monitor question

[pipspeak]

Has anyone found a foolproof and relatively straightforward way of using different color profiles depending on whether a T4x is using its native display or an external monitor via DVI/port replicator?

I'd like to hear of people's methods for doing this since I cannot seem to get a functioning system, mainly thanks to the ATI video card not being able to properly identify which monitor is currently being used.

It always lists the T43 display is the current monitor despite the fact that a windows hardware profile actually disables that display, and despite the fact that external monitor is listed. Is this inability to recognize the correct "current monitor" something to do with the port replicator?