To mirror your Windows computer to another computer, you will need AirParrot 2 in addition to Reflector 3. 

Follow the steps below to mirror your Windows computer to Reflector 3:

1. Be sure your computer is on the same network as the computer that has Reflector 3 installed.

2. Launch Reflector 3 on the computer you wish to mirror to.

3. On the computer you wish to mirror, you will need to install and launch AirParrot 2.

4. Locate the AirParrot 2 icon and select it. 

5. Clicking the AirParrot 2 icon will present a list of available receivers.

6. Select the computer running Reflector 3. 

7. Your screen will begin mirroring.