Arduino Serial Port. COM1 does not exist Hello everyone I'am new to this site so please bear with me.

I have an Arduino Uno that I'm using in my simple project using VS 2008. I got this error says The Port COM1 does not exist. The flow of my project is after inserting a coin into the coin slot the arduino will pass the data into my project and it will display into a Label or Textbox the value of the inserted coin.
Never used Visual Basic but:


There is no such thing as Serial1 on Arduino Uno. There is only Serial. (Serial1, 2, 3 are available on ArduinoMega) Reference: Arduino
For COM port you should check your device manager. Often it appears at COM3 so probably you should check this issue.


Just for curiosity: Why VB? Is it only your choice or it use less ram or memory, works faster or anything?