I'm not sure that board is supported in fact in one forum the reply was this:
Intel 845 boards aren't supported, plain and simple. Old systems such as these should not be updated to Vista.
Again another site said:
Windows Vista Graphics Display Drivers for Intel D845gvsr...? - Curious
18-Jan-08 05:58:33
Since the 845 graphics chip does not have internal DX9 support there are noVista drivers for it The 945 graphics is the first Intel chip for whichthere are Vista drivers available from Intel.
Sorry to be the bearer of bad news... Perhaps you could fit seperate graphics and sound? It depends how much your wanting to use vista I guess...