"We find great ideas and cultivate them off whatever platform we can think of," says Nickelodeon president Cyma Zarghami.

Cartoon Network president Jim Samples says, "There's a certain amount of hype" surrounding Web-based content, and creating new programs online "is not the best use of the medium."

Instead, Cartoon is making 90 two-minute shorts based on its new series "My Gym Partner's a Monkey" that can be used online, on cellphones or on TV. Cartoon's biggest push is for Andre Benjamin (aka Outkast's Andre 3000) and his "Class of 3000," an animated series due in November about musically gifted students at an Atlanta school.

Also in the hopper: "Squirrel Boy," coming in July, and "Re-Animated," Cartoon's first TV movie and first use of live-action footage. In the film, a boy inherits the frozen brain of a cartoonist and begins seeing cartoons everywhere.

Disney Channel is soon to revive "Mickey Mouse Clubhouse" in computer animation, and for older kids, it will try "The Replacements," a new cartoon on a network that's known mostly for live-action fare.

In other changes, Disney will yank the Jetix action-adventure block from ABC Family, airing it exclusively on Toon Disney and ABC starting this fall.

CBS is dropping Nick Jr. preschool shows from Saturday mornings and will air shows supplied by DIC Entertainment aimed at girls, including "Madeline," "Sabrina: The Animated Series," "Kooky Kitchen" and "Cake," a series about a pint-sized Martha Stewart type.

And Discovery Kids is pulling its block of Saturday morning shows from NBC, which is planning its own programming for this fall.