if you are going to be only hooking it up to a pc look at your video card and what outputs it has. if it has dvi output then you will want a dvi monitor. if it has hdmi output then you will want hdmi output. if you are dead set on using hdmi on dvi or dvi on hdmi be aware that they do make adapter cables so its not really a big deal.
personally i prefer to use dvi for all my pc monitors and i have a dvi to hdmi cable for hooking up to my tv.