Gramercy Pictures announced on Friday the selection of its national ad agency and in-house West Coast director of publicity.DDB Needham will be the fledgling distributor’s ad agency, responsible for all media planning and broadcast media buying. Greg Ptacek was named as director of publicity, West Coast. DDB Needham’s L.A. entertainment division also has Universal Pictures (Gramercy’s co-partner), Universal Studios Hollywood and Florida, and MCA Syndicated Television as clients. It will provide strategic planning, target audience analysis and counsel on cross-promotional tie-ins to Gramercy. Ptacek will report directly to Claudia Gray, senior publicity VP. He was formerly manager of publicity at New Line Home Video, where he oversaw corporate PR and product publicity/promotions. Gramercy, a joint venture of Universal and Polygram Filmed Entertainment, is a new distribution/marketing company that will handle modestly budgeted films produced by both partners. It has nine films scheduled for release in 1993, starting with Mario Van Peebles’ western “Posse” May 7.