If you're meaning 'can I use my motherboard HDMI plug to display my 8800 card's output', then the answer is 'no'.
Your 8800 has HDCP capable output, enabling you to use a DVI to HDMI adaptor.
http://www.maplin.co.uk/module.aspx?ModuleNo=97886
Your 8800 has HDCP capable output, enabling you to use a DVI to HDMI adaptor.
http://www.maplin.co.uk/module.aspx?ModuleNo=97886