How to install drivers for the Arduino Uno with Windows7

To use Arduino Uno and upload programs to Arduino Uno with sucess, you need three steps:

1. Plug in Arduino Uno to PC via USB;
2. Download Arduino IDE;
3. Install Arduino Uno Driver;

Please see the next video how to install drivers correctly.

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Communicating between PC and Arduino (Correction)

On March 19th, 2012, a youtube user called Sophie333C found a problem on video "Communicating between PC and Arduino".

Sophie333C's comment:
Hi, There seems to be a problem when you press send the second time around,
it only seems to update every second press of the button!

After two days, she sent me a solution. I tested her solution and it works fine. Now I can receive a answer
when I press the button for first time. Here is code of solution:

  answer = port_arduino.ReadByte()
        TextBox2.Text = Chr(answer)

I would like thank to Sophie333C to found out this problem.