Pittsburgh Filmmakers School will give free seminars at their location at 477 Melwood Ave. in North Oakland. The classes, which run 6 to 8 p.m., will cover Basics of Adobe Photoshop on June 10; Digital Video Editing on June 17, and Posting to the Web (Stills and Video) on June 24. This introductory offer is for new students only. Admission is free. To enroll, call 412-681-5449.

Rangos Omnimax Theater at the Carnegie Science Center, One Allegheny Ave., North Side, is showing "Greece: Secrets of the Past," "Under the Sea," and "Grand Canyon Adventure: River at Risk." Admission cost varies. Omnimax is not recommended for children younger than 3. Call 412-237-3400 for show times.

<B>Tuesdays@2</B> free movies is scheduled to show "Frost/Nixon," a dramatic retelling of the post-Watergate television interviews between British talk show host David Frost and former president Richard Nixon. at 2 p.m. Tuesday in the Kean Theatre at St. Barnabas, Washington Place, 5847 Meridian Road. At the same site, <B>Wednesdays@1</B> will show "The Wrestler" with Mickey Rourke, Marisa Tomei and Evan Rachel Wood at 1 p.m. Wednesday. Admission is free to both, but donations are accepted to benefit the St. Barnabas Free Care Fund. Call 724-444-6288.