1. Download Internet Explorer 9 (32-bit here | 64-bit here)

2. Download RT Seven Lite from here

3. Launch RT Seven Lite and select a Windows 7 image to integrate Internet explorer 9.

4. After the image is loaded, go to task selection and enable Integration task.

5. Now add your downloaded Internet Explorer 9 to updates list

6. Finally, click Apply button and commit to start integration. RT Seven Lite will start the integration and save the image. Test it in Virtual Machine for confirmation

7. Tested the image after integration in Virtual Machine. See the screenshots below