I just ran into the same issue with an HP Business PC. However, the news isn't good for that driver. According to Intel, the 910G/915G have limitations that prevent running Aero. The earliest driver is the 945G that could run Aero. I am still trying to figure out a solution.
Media Center PC I am Building: Silverstone GD01B-XMR Case Gigabyte Motherboard (P35 Chipset) Intel Q9650 3.0 GHz quad Core Silverstone 700W Modular PS 8 GB G.Skill PC8500 RAM 4 Seagate 1.5 TB HDs 2 LG BD-RW/HD-DVD ROMs ATI HD 4770 Video Card (XFX) Creative Fatality X-Fi Audio Card Twin...