The Disney Channel's "LeAnn Rimes in Concert" presents the 14-year-old Grammy winner in her first television special, Sunday at 7 p.m. In the one-hour program, Rimes performs her hit "Blue" as well as some yet-to-be released songs. The show makes use of the surroundings at Walt Disney World, where Rimes taped the special. She goes rollerblading, plays softball, rides horses with her father and takes a whirl on the Tower of Terror and the Big Thunder Mountain Railroad. She also has a seat of honor in the Disney-MGM star motorcade. Repeats: 9:40 p.m., Tuesday at 8:55 and 11:30 p.m. and Thursday at 10:35 p.m. and 4:30 a.m.
* Sunday on History Channel at 8 p.m., "Modern Marvels" features the premiere of "The Great Wall of China," about the 1,500-mile wall that is wide enough to ride horses on. Started in the 3rd century and finished more than a thousand years later, it remains a marvel of the ancient and modern worlds. Repeats at midnight and 4 a.m.
* Sunday on Bravo at 9 p.m., "Inside the Actors Studio" hosts Julia Roberts in an enjoyable, candid chat about her vulnerabilities, her strong points and her roles as a small-town girl in "Mystic Pizza," a hooker-with-a-heart-of-gold in "Pretty Woman" and an abused wife in "Sleeping With the Enemy." Repeats: midnight and Friday at midnight. * Monday on A&E Network at 8 p.m., "Biography" presents "Al Gore: A Burning Ambition." Son of admired former Sen. Albert Gore Sr. (D-Tenn.), the vice president appears to have been custom-designed for the modern political system. Repeats at midnight.
* Wednesday on USA Network at 9 p.m., Rachel Ward, Joshua Morrow and Terry O'Quinn star in "My Stepson, My Lover," about a nurse who marries an older, wealthy man. But when he neglects her, she turns to his grown son for comfort, and they fall in love. Repeats Saturday at 10 p.m. * Wednesday on A&E Network at 9 p.m., "James Taylor: Live By Request," a two-hour interactive telecast. Viewers can dial an 800 number to request songs for Grammy-winner Taylor to sing as Tony Bennett did on Valentine's Day. Repeats at 1 a.m. * Saturday on the Learning Channel at 8 p.m., the "Great Books" series premieres Cervantes' "Don Quixote," followed by Charles Dickens's "Great Expectations" at 9 p.m. They are part of the "Great Books Festival," which airs for 18 hours from 9 a.m. until 3 a.m. There are encores of 16 other books in addition to the two feature presentations. CAPTION: The Disney Channel presents LeAnn Rimes in her first television special, Sunday at 7 p.m.