If i plug a DVI to HDMI cable into the HDMI port in my Gigabyte Z68 mobo, then into the DVI port on my monitor, will this make my PC HD? Also, right now i have a DVI connected directly into my 8800GT from monitor, if this HDMI connection works converting my PC to HD, what happens to my 8800GT card? Does it become obsolete or can i switch configurations back and forth if i leave both hookups connected to my monitor?