Windows XP & earlier (Windows Vista doesn't support this)
Laptop or Desktop PC
headphone extension cord (optional)
Watch video for more help:
Step 1: Plug in Microphone
Go into the windows sound properties. Unmute the microphone and turn the volume up all the way. (turn on the 20dB boost in the advanced.)
Step 2: Speaker into computer
Step 3: Phone.......
Step 4: Setting up......
Turn on radio and tune to the right frequency. When you hear silence is when it's on the right frequency.