Consumer guru Clark Howard will help children afflicted with brain and spinal cord tumors with a fundraiser this month at his Buckhead home. The April 28 event will benefit the Butterfly Fund of the Brain Tumor Foundation for Children, which provides emergency financial assistance to families with kids in treatment.  Tickets are $500 per person for the event, which will include the presentation of the foundation's Visionary Award to Dr. Walter Curran, executive director of the Winship Cancer Institute at Emory University. For information, go to: www.braintumorkids.org.