Frustrated! Need help connecting Uno to XP

Computer will not connect to XP.
Arduino IDE says COM3
In device mnager, I see Arduino (Com3)
I have installed the software on my D drive and my C drive with no connection.
In device mnager, Com3 is set to 9600 Baud.
I have restarted the computer
I have followed the install instructions to the letter, many times.

What else can I do?

SOLVED!. I had a wire connected to pin 1, or whatever the arduino usart pin was. I previously had a bluetooth module connected and had not removed it.