no vga /d-sub is analog and hdmi is digital only unless you invest in a active adaptor and no guarantees there [like 20-45 bucks]
dvi-''I'' that's on NVidia cards will carry and support analog dvi-''D'' like on most higher end AMD cards is also digital only .
so like me I use that adaptor like shown above from new egg to connect from the cards dvi-''I'' to my older crt monitors witch use a vga/d-sub cord
best to let us know what monitor you got to use so we can look at its specs to see whats the better way to go about things ?? and also what 970 card your interested in cause that adaptor should come in the box with the card