X6 46" LED wall project-NEED HELP!!!

[techwolf]

Hey guys, great site!
I need some help with a project I'm doing. I've got six 46 inch LED t.v's I'm mounting together and this is how they will function:
x2 will be direct tv- so take this out of the equation
the other four will be displaying database reports and remote dvr cameras, so what I'm trying to do is get those four monitors controlled by one computer with one or two video cards via HDMI, but I do not see dual or quad HDMI cards, so.....
What's the best/easiest way to accomplish all this? Btw, the cable runs are around 40' so I guess I will need a HDMI repeater? Should I do all this with DVI cables?????

 

[its phillip]

Most decent video cards nowadays will have 2x dvi, 1x hdmi, and 1x displayport. If you can find one, there is an eyefinity 6 edition of the 5870 that has 6 displayport outputs, and you can just get adapters or dp->hdmi cables for them.

 

[techwolf]

O.k, so just do what I'm doing, buy x 2 video cards, run hdmi cables from all t.v's connect to the x1 hdmi ports on each card(x2) and then to x2 (passive or active) hdmi to display port adapters?

The runs are 40-50' so should I just get 25' cables and then put a hdmi repeater in the middle of the run??

Btw, thanks very much for your help