"You can only select one input to the monitor at any one time."
And yeah just use the better connection, in this case, the DVI. (So the hdmi to dvi converter would be necessary, or you can just buy a DVI cable from a local retailer or online for a lot cheaper at amazon.com)
I now have a HDMI to DVI cable hooked up, but can't tell a difference in the picture, the monitor is set for HDMI. I thought I could get away without the converter, any thoughts?