Windows 7 is a nice operating system, but it lacks good drivers for legacy/old products like the old Intel onboard VGA card.
Since there is no driver for your Intel VGA card, the generic VGA driver is installed for your Windows 7 operating system. This results in the very low performance index score of 1 and you cannot use any 3D functionality at all. For instance: Most of your screensavers will tell you that there is no Direct3D compatible video card installed
After some experimenting i have found out that the HP Compaq dc7700 Windows XP drivers can be installed in Windows 7 with little problems.
You will get errors/notifications and you might get the compatibility warning, just install it as if it were a Windows XP application. For more help see the Windows 7 documentation.
Your performance index score may still be 1, because it's still a crappy vga card and probably will not be able to use Aero. But your generic vga driver is gone and you will be able to use some 3d in Windows 7.
Download link: sp35952.exe.
Results may vary from absolute awesomeness to utter horror. No warranty or support whatsoever. Backup your files before you tinker with them.