Ok. I don't know if your package had anything to do with my partial success or not. Probably not.
But this is what I did. I just got 2 laptops. An inspiron 9400 and a precision m90. bot are identical in design and chipset (945PM). And so is the dell d520 (the chipset that is, not the design) which I've used EDP 1.9.2 on.
The 9400 has a bad motherboard, won't even boot. The M90 boots fine with my d520's HD (10.6.8 + EDP 1.9.2). I did not reinstall OSX on it. The graphics card is not seen by system profiler. I downloaded NVenabler and installed that, and I got full 19200x1200 resolution after a reboot. The card is an nvdia FX1500M. Upon boot, NVenabler does seen to probe it successfully. However, when I use system profiler and scroll down to the graphics section, system profiler simply crashes. So I don't really know if it supports QE, CI.
The video cards are interchangeable between the precision M90, the latitude E1705, the xps m1710 and the inspiron 9400, so tomorrow I'd test the ATI X1400 card that came with the 9400 on the M90 and see if the OS sees it. I'm running 10.6.8 w/ EDP 1.9.2
The trackpad isn't working btw. I'm using an external mouse. I think I'm going to check insanelymac instead, but I wanted to keep you guys updated. I think these models are totally do-able.
l8r!
PS: forgot to mention that wireless and audio work just fine. The speakers of the M90 are definitely better than the built speakers of the d520 and d620