Widescreen Gaming Forum

My Specs

Asus M4A88TD-M-EVO-USB3
AMD 1090t x6 @ 4.2ghz, with 4GB DDR3 1333
Gigabyte HD5770 1GB
1.5TB HDD & 250GB HDD samsung SATA 2
1x 24" LCD 1920x1080 ASUS VH242

I am about to but 2 more of these monitors but before I do, I have bought cables
1 is a HDMI to HDMI I pluged this in to the monitor and I did not get a full screen the res was still the same but a Black banner about 1" thick around the outside of the picture, This also happened when I plugged in my Display Port (videocard) to DVI cable (monitor), And HDMI (videocard) to DVI (monitor).
I need advice on what cables I need to buy so I can run 3 screens (Eyefinity), The monitors have HDMI, DVI & D-Sub input. My video card has 1 displayport, 1 HDMI, & 2 DVI connectors.

Thankyou in Advance! :)