Hi there - I have an almost identical setup. My video card is the ATI Sapphire X1650 PRO with dual DV output, and monitors are the Eizo CE240W and HP LP2475W. I was using BasICColor until the trial ran out. At times, calibration would go perfectly, with the Eye One Display 2 colorimeter. However, at times, the Eizo monitor would fail to be calibrated resulting in an error message to that effect, and at other points the BasICColor software would not recognize the HP display as being DDC enabled such that the "both hardware and software" calibration option would not be available.
Still, given that it did work at certain points suggest that it is in principle possible to calibrate both displays in this kind of set up.
I will keep researching this and will let you know of any solutions - likewise, your guidance would be much appreciated.
I'm beginning to think there are some instabilities in BasICColor (at least on XP64) I like the work flow and want it to be successful but I can't get it to profile both screens and I notice things like the dates reported for the 'active' profiles are really strange and if I reboot then the generated profile isn't always loaded !?
I've just reset everything to default and reprofiled with HP APS, both screens look about right (and very similar to each other), more encouragingly they stay this way even after 2 reboots
Unfortunately I don't know what made it work... I reset the 2260 to defaults (two screens with desktop from the left screen extending over the right screen), reactivated ATI colour controls, rebooted then profiled first the Eizo (screen 0) then the HP (screen 1). (just remember to move the APS controls to the second screen before profiling it ).
As for DDC on the 2475 I can't get BasICColor to recognise this at all, and yes it is turned on in the OSD ;-) No problem recognising DDC on the Eizo.
I now get a very good match with my prints (on a Z3100) only differences I can find are in some saturated yellow/greens and these are very minor - much less than the difference between perceptual and relative intents on the same pints and probably due to minor imperfections in the paper profile (straight from APS and not tweaked).
Have you loaded the 'driver' for the 2475 from the CD?
Hope you get yours to work!