http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18246&ProdId=1065&lang=eng This link shows "Windows 7* Driver Availability for Discontinued Intel® Desktop Boards" and D845GVSR is very much listed there. Give it a try.
Ha ha, the download is a pdf that says they don't have a Windows 7 driver for it, nor do they intend to. I'm looking for a solution too. Any other ideas?