SUNDAY Trans-Antarctica: The International Expedition (ABC, 7-8 p.m.): Second in a five-part series covering an unmechanized trek to the South Pole - the first of its kind, claims ABC. Yes, it's part media event, but there can be no faking the physical challenge of traversing that continent. Moscow Night (10-11 p.m., A&E cable network): Coverage of the final of five sold-out Moscow concerts given by Dave Brubeck and his quartet in 1987 (please see preview in tomorrow's section). MONDAY American Masters (PBS, 9-10 p.m.): ``Neil Simon: Not Just for Laughs'' looks behind the laurels at the world's most commercially successful playwright (please see preview in this coming Friday's section).

TUESWDAY Tom Peters special (PBS, 10-10:50 p.m.): ``Excellence in the Public Sector'' may not translate into excellence on the public TV screen in this case. But Mr. Peters - an author and management analyst with an entertaining style - does offer something the public sector can really use: examples of government and nonprofit organizations that work.

WEDNESDAY American Experience (PBS, 9-10:50 p.m.): In a special edition of this series, ``The World of Tomorrow'' recalls the 1939 World's Fair in New York and samples the optimism and faith in technology that filled the air - as captured in footage of visits by everyone from FDR to Mickey Rooney.

Please check local listings for all programs, especially on PBS.

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