How do you connect the wires from a PS2 keyboard to the Arduino?

And will this interface be able to make LED displays like these work to say things like
"Merry Christmas!", "Happy Birthday!", etc.?

Here's my LED display I bought on eBay that I'm working on this project with.


And here's the terminal strip for additional help.

I have another question.
Out of curiosity, can the Arduino be controlled with just a replacable PC keyboard somehow?
I mean, how they sell replacement computer keyboards like this:
http://www.staples.com/Gear-Head-107-Key-Windows-USB-Keyboard/product_943697
Is it possible to run an LED display sign through something like this with the Arduino?
Just wondering.

What kind of sketches would you suggest I write? Any ideas/suggestions?
I'm only asking 'cause I'll need some examples so I'll know what to write.

With the information contained in the manual you should be able to write a sketch for ANY Arduino Product available. For the Arduino you will need an RS232 Adapter of some find as the Arduino doesn't do 'Pure RS2332" but rather TTL RS232.

Doc

I have received two new documents from sunrise systems.

Well, so far, the only thing I can get the LED display to do is the test pattern:


Now the only thing left to do is to write a script in the Arduino Software so it can output any text I type to the LED display.
Any suggestions on what I should write for the scripting? Any and all help is welcome.

Primary program completed. LED is flashing in pin 13. Now I just gotta figure out how to program the Arduino to output words I type to the LED sign. The only thing it can do is the start-up test pattern every time I turn on my laptop.

I mean, if I type things like "Merry Christmas!", "Happy Birthday!", "Go Red Sox!", etc., I gotta figure out how to write a script to output words like that so the display can do more than just the test pattern depicted in the above video.
Any suggestions?

I May have corrected those mistakes, but now when I try to upload to the board, the programmer stops responding.
What'd I do wrong this time?

[pinMode(ledPin, OUTPUT);]

I see. I'll keep y'all posted as time progresses.

Look closely at this from my code:  pinMode(ledPin, OUTPUT);

then at your error message:
  Highlighted part:
  ledPin(pinMode, OUTPUT);

error: In function `setup':
error: called object is not a function

You have things reversed.

Highlighted part:
  ledPin(pinMode, OUTPUT);

error: In function `setup':
error: called object is not a function

Please post the entire error message that you are getting.

Well, it's not accepting it on mine when I click upload.

This is the sketch as it runs for me, using Arduino 1.0.1:

Code:

int ledPin = 13;

 void setup()
 {
 //initialize pins as outputs
 pinMode(ledPin, OUTPUT);
 }

 void loop()
 {
 digitalWrite(ledPin, HIGH);
 delay(1000);
 digitalWrite(ledPin, LOW);
 delay(1000);
 }

Ok. I've corrected that, but another error I've found is:
  ledPin(pinMode, OUTPUT);

In function `setup':
error: called object is not a function

What'd I write incorrectly there?

At the top of the sketch, change   int Pin = 13;  to  int ledPin = 13;

In this video...

...I was told:

int Pin = 13;

 void setup()
 {
 //initialize pins as outputs
 pinMode(ledPin, OUTPUT);
 }

 void loop()
 {
 digitalWrite(ledPin, HIGH);
 delay(1000);
 digitalWrite(ledPin, LOW);
 delay(1000);
 }

 When I tried to upload that to my Arduino, I got an error which as follows:
 In function `loop':
 error: `ledPin' undeclared (first use in this function)

 What should I do to correct this?

Then:

Windows 7: C:\Users\USER_NAME\AppData\Roaming\Arduino\Preferences.txt

Uh, nope, nope. That did not work either. Nope, nope.
The preferences.txt file keeps coming back every time I try to start it up.

My Windows 7 operating system does not go:
C:\Documents and Settings\USER_NAME\Application Data\
That's Windows XP

Windows 7 goes:
C:\Users\USER_NAME\

I'm getting the same error with my Arduino Uno. What should I do?