Originally Posted by Crazy9000
They are High Definition inputs, which you might want if your getting a new-gen game console or watching hd-tv on cable or something. Otherwise you don't really need them
HDMI is a digital video input with sound. DVI is convertable to HDMI. HDCP is a DRM, not a connection type.... it will not let you play BluRay, HD-DVD, and other future media. Dell 2407 supports HDCP and almost all recent TVs do as well. It doesn't hurt to check though.
Get the Dell 3007... nice compromise. Uber-resolution and great size!