I was able to download those utilities and run a diagnostic report and determine that I have a Mobile Intel(R) 915GM/GMS,910GML Express Chipset Family. Looks great!
After poking around their website, my conclusion is drawn because of a lack of information. There is no faq that says, "is this a 3D accelerator? Answer: No". Rather, I don't see anything like that listed, so I guess the answer is no.
And that's just too hard for the general public. You've seen the comments sections -- people can't even get the activation code to work.
Anyway, to repeat my suggestion, the site developers need to provide more assistance in helping users decide whether their system meets the minimal qualifications.
A "How To Check" guide like Barry suggests is a start, but I would think that the long term solution is to have a widget-like applications that users download to their local computer. This could carry a traffic light metaphor : green, yellow, or red.
And you could go ahead and take the extra step and include the activation process in the widget, another area that people complain about having problems.
Some people will never download this type of application, but many will.