Can T43 drive 2 external monitors?

Hi folks -- this is my first posting and I didn't see this exact question asked before so I thought I'd try the experts! I have an IBM ThinkPad T43, model 1871-4CU, with Mobile Intel 915GM/GMS, 910GML Express Chipset Family (according to the Device Manager). I also have a docking station P/N 74P6734. I'm trying to run two external monitors instead of using the laptop's display and a single external monitor, but my system doesn't seem to support this. I can certainly run the display and a single external monitor (off the VGA port on the dock) with no problem, but when if I close the laptop and try to run two external monitors, the Display Settings control panel doesn't seem to recognize the second monitor (run off the DVI port on the dock). The Intel GMA Driver for Mobile control panel also doesn't recognize that a second monitor is attached. I know the second monitor and the DVI cable are fine because if I remove the VGA monitor the DVI one works just fine. My hunch is that since the laptop itself only has a VGA port on it and no DVI, that by design it can only support one external monitor at a time and not two. I was hoping, though, that since the dock has both ports that I'd be able to to drive two external monitors (again, just two external monitors, not those two plus the laptop's display for a total of three). Am I correct in thinking I can't get around this or maybe there's something I'm overlooking -- like a driver update -- that would allow me to drive two external monitors? Thanks in advance for your help here!
Solved!
Go to Solution.

The reason your T41 works with DVI is it has the ATI 7500 discrete graphics. The original poster had a T43 with the Intel integrated graphics which did not support DVI.
I don't have my T42 with the ATI card with me so I cannot check using it on my 1680x1050 DVI monitor but I know I have used it with an external VGA 1440x900 monitor.
Did you upgrade to the latest driver?
See also here.
Message Edited by zilla on 2009-05-15 02:05 PM
T500: Vista 32, 2.8GHz, 4GB RAM, 15.4" 1680x1050, 500GB 7200rpm, ATI Radeon HD3650 + Intel 4500MHD. T42: XP, 1.7GHz, 2GB RAM, 14.1" 1024x768, 250GB PATA, ATI Radeon 7500.

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