If the laptop runs "other games" fine, then it may be a driver problem. Find and install the latest drivers, make sure you have the latest version of microsoft directx, and hope for the best.
If your drivers are already up to date, then you're probably out of luck. HTC lists a set of supported vid cards and since they're still a relatively small operation, they're not likely to expand the list of supported video cards without some sort of incentive. I don't even know if sending them a sample system would help, but most people who could afford to give HTC an unsupported system to verify could probably more easily afford to just buy a supported system...