Officially, it could really be incompatible. There are sometimes ways to override it, but that's not guaranteed. The best way is wait for the manufacturer to supply it. I know they are slow to come around. This is not just limited to Intel. Someone I knew with a Dell laptop and Nvidia GPU couldn't install the drivers downloaded from Nvidia's site. They eventually came around to supporting it, but my point is that its not guaranteed to work.
You have the older HD Graphics with the first generation Core processor. The OpenGL enhancement with the latest drivers, if you read the release notes specifically refer to the 2nd generation Core processor. Intel graphics had generic OpenGL support way back in 2006 with G965, individual support might differ. That said, the latest drivers supposedly enable Amnesia support with the first HD Graphics.
The .ini installation method is one way I know. If you are following the steps exactly(downloading the zip version and following the instructions) and still can't get to install, I'm afraid you won't be able to fix the problem.
We are now a half year further.... and did you any answers about your problems? And if you found a solution yourself can you write it down here, because I even want to know how you fix it.
I'm a Dutchman and also user of a first-generation Intel processors(the Quad Core i7 @ 920, ICH10R, LGA-1366).
In my opinion sells the company 'Intel' his processors and never give the general consumer his (f/m) service which he belongs.
The our situation have the first-generation Core processors no (extra) Media support on the motherboard as the 2nd generation and all written text, plug-ins, software is for that 2nd generation..... that means that if I want something to know about the media possibilties (p.e. support for the new media with AVCHD, Blu-ray, 3D, ....) you can not find anything else as information for that 2nd generation on this website, but also by third-part companies.
If the company 'Intel' gives the (older) first-generation no back-service/support or advice between first and second generation than third-part companies doesn't know either and don't bringing news!
For a few processors there are also extended service like using the same processor/motherboard with another LGA or v.v.
So I read a lot, but I cannot find the real Media advice for the first-generation Cores from Intel.
If another person cannot help me, maybe I ask this 'item' by the questions....!
Kindly regards from Amsterdam/Netherlands '
~ I'm open, honest and sincere to myself and to others....! ~