Dr. Ronald Sobel, the temple's senior rabbi, said millions with access to the Internet can participate in the Passover Seder with the Fifth Avenue congregation for 37 hours, ending 7 p.m. tomorrow.

"We are pioneers," Sobel said. "We're told this is the first time a religious broadcast has been presented worldwide over the Internet."

"This is definitely revolutionary," said Andrew Lee, the temple's media coordinator.

Those logging onto http://www.emanuelnyc.org will be offered a 55-minute program starting every hour on the hour.

Cybernauts with audio hookups can hear traditional prayers and the readings from the Haggadah.

Internet users can also browse through some 100 pages at the temple's website.

Jewish families around the world celebrate Passover - commemorating the exodus from slavery in Egypt - with the Seder, a traditional meal.

Sobel emphasized the Cyberseder was not intended to replace face-to-face Passover celebrations.

"This is in no way intended to be a substitute for a family Seder," he said.

"This is an experience that will be something in addition. It's mainly for people who do not have a family or who are isolated. For those who are alone, how wonderful this will be."

Sobel said the temple moved on the project because "the technology was there."

"[We asked] how can we use it in a significant and innovative way?" he said. "To not use this new technology would be sinful."

Coming this fall, Temple Emanu-El hopes to offer Rosh Hashanah services on the Internet.