Don't you want one? Notable Dallasites donated pinatas to be raffled off at "Cerveza y Quesa at the Mesa." Take your chance on a Dallas Cowboys pinata filled with jerseys and memorabilia. Sara Hickman's is filled with CDs, Star Canyon's with cookbooks and packaged foods; another is filled with $200 worth of restaurant gift certificates. Blue Mesa Grill will host the event on Wednesday, September 27, to raise money for AIDS Arms, Inc. a resource agency for men, women, and childern with AIDS. The $10 admission price goes directly to AIDS Arms; quesadillas are complimentary.