Need Some Help With Setting a Large Monitor 60' or More

Where do I start?
We have several Video Teleconference rooms at work. The rooms are really multi-media rooms. Sometimes people want to do power point presentations. When they do them the display is a bit pixelated. No matter what setting I use for the output I get a shitty display.

Can one of you computer guys help me with some recommendations? I have decent budget...

Thanks in advance,
Joe

 

What make and model are they?

 

a sixty foot monitor is huge.

 

My first guess is they are really TV's.

 

OK. I am a noob at this stuff.
60" not 60 foot...
Sharp PN U-553

If they are really just TVs, what is the best way to set them up as monitors? All of my HDMI ports are taken up by other requirements.

 

I have just discovered DVI and Display Port...is this the direction I should be considering?

 

looks like it is a monitor.

should be able to set resolution at 1920 x 1080 on computer on any of the connectors.

 

I think you found your problem. I'm assuming you're using VGA.
http://www.cnet.com/news/hdmi-vs-displayport-vs-dvi-vs-vga-which-connection-to-choose/

 

worthless, thanks. that's a big help.