title: Read from Serial port to Excel
body: <p>I need to create a button in Excel to read data in from serial port. I can't have any extra files attached to the excel sheet. I need to transfer this excel file to another computer to read this data. 
  Here is how the file is suppose to function: Press button to select the serial port. Then, press another button to read data from serial port into the excel cell. 
  Could someone please tell me how to do this? Use VB macro or ActiveX macro? Sorry, this is the first time i'm using excel for this. Help please. Again, I can't have another file attached to the excel sheet. Thank you!</p>