So my girlfriend just bought a nice HP laptop, and while in the store I picked up a DVI cable (open box, woot) to connect my older 17" monitor to my new blazing fast 8800gts. I got home, and took a look at the box and read single-link cable. Out curiosity, I explored the meaning a little bit and I guess dual-link is much, much better (thanks best buy). So my question is, do I need to worry about returning it for a dual-link, or will it be fine with my 17", and also, if I upgrade to a 22" monitor in the future, will I need to be concerned then?