Setting the call-to-action Facebook Like Box feature will allow you to add a Facebook window on the homepage.
To do that:
1. Open the HOMEPAGE tab in your sidebar
2. Open the TEMPLATES tab
3. Click on Customize
4. Click on the Call-to-Action section to get a drop-down list
5. Select Facebook Like Box.
A Facebook window will appear directly on the homepage
6. Click on Settings next to the Facebook Like Box field in order to change the window's position and alignment.
7. To connect your Facebook page and set the window size, click on HOMEPAGE >> FACEBOOK LIKE BOX tab
Please note that this option is available for premium websites only.