There is not now and never will be a Windows 7 driver for that card, it is just far too old to be receiving any kind of support anymore. In fact the last driver for it is from 2006,
ForceWare Windows XP/2000 32-bit
which will probably install in Windows 7. It may take compatibility mode,
to get it to install. Also you will not get Aero with that card as it doesn't have the necessary hardware on it to run Aero.