I have an old Panasonic video camera, model NV DS 15 which successfully downloaded files into my old XP system by firewire.  Now I have upgraded to Win 8.1 and downloaded Movie Maker, I am unable to download.  I follow the instructions to download file and am presented with a box telling me my equipment will be detected, it isn't.  All other searches I have made give answers for Win 7.  Help would be appreciated.