Hi, I have a ASUS VG278HE monitor and I was playing around with it and found out the screen I have has a cool mode where you can have an on-screen cross hair or timer. I followed the instructions to use it but it didn't work. Then I read the manual and it said you needed to use VGA but I use DVI. I heard VGA is bad or something can someone please clarify this, and if its true, is it such a big deal for it to not work if I use DVI?