Attention, Vampire Diaries fans: Do you want to win a poster signed by the cast... while helping a great cause?

TV Fanatic has teamed up with the Tick-Borne Disease Alliance to make this possible.

As a spokesperson for the organization, Candice Accola watched a close friend suffer from Lyme's Disease. She is now doing all she can to Bite Back for a Cure - and here is how you can join her and then be entered in our exclusive giveaway:

1. Get involved at the official TBDA website. Download/print a sign from that URL. Snap a photo of yourself holding it. Upload this image to the TBDA Bite Back for a Cure Facebook page.
2. Follow any or all of the steps outlined in the following form for additional chances to enter and win a poster signed by members of The Vampire Diaries cast.

That's all it takes! Assist Accola in this important battle now. Contest is open to U.S. residents only and all entries must be submitted by Wednesday, August 7.

UPDATE: We have a winner! Congratulation to Mary Stewart and thanks to all for participating!