How do I offer a coupon for those who "like" my company on Facebook (w/ new timeline)

How do I offer a coupon for those who “like” my company on Facebook (w/ new timeline)? On the old Facebook pages, you could have a welcome tab where you prompted visitors to “like” you to gain access to exclusive content (like a coupon code). Now that Facebook has converted pages to timelines, how do I do this and make it clear to new visitors to like us to gain access to a coupon code? Thanks for your help?

How do I offer a coupon for those who "like" my company on Facebook (w/ new ... and make it clear to new visitors to like us to gain access to a coupon code? ... to the app page prompting them to “like” the company and get the coupon code.

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