Questions on different color profiles for two displays?

have an E1505 with the ATI x1400 video card and the Ultra screen (1680x1050), also a Dell 2007WFP external monitor (1680x1050). I use a Gretag/Macbeth Eye One display calibrator and have profiled both the laptop and external monitor, however I can't figure out how to use BOTH monitors at the same time, each using its appropriate color profile. (I'm only able to use one profile for both displays meaning one always is off color) I have the Microsoft Color Tweak Toy hoping that would solve the problem but the only info I get is that there are 4 'monitor's' listed but no way to determine which 'monitor' device is associated with which display. Has anyone out there solved this? I checked the forums but haven't been able to phrase a search inquiry that produced useful info. Bob