Bethel '97 is coming to Yasgur's Farm in August, and so are more than 80 bands and some flush toilets.

Oh, and participants are asked to kindly, if they wouldn't mind, leave their beer and cigarettes behind.

Details on the three-day event will be released at a 10 a.m. press conference tomorrow at Cafe Saint Francis in midtown Manhattan. In a one-page press release announcing the conference, public relations guru Gerald Siegal said the three-day show will include a number of Woodstock '69 veterans and other bands on two stages, along with educational booths, for a suggested donation of $10.

The concert will take place the weekend of the Woodstock anniversary, Aug. 15-17, at the former barn of Max Yasgur, now owned by beer-store owner and concert organizer Roy Howard and his companion Jeryl Abramson. The property is located about a half mile from the original Woodstock concert stage.

Howard, 64, put on a similar show last year, but that show was much more spontaneous.

``We decided Wednesday to do it on Friday,'' Howard said yesterday. ``This year we've been planning since last fall.''

Since then, Howard has drilled a new 350-foot well on his property, and plans to install flush toilets to accommodate the crowds. About 30 to 40 volunteer emergency medical technicians plan to work the site, said Steve Blackman, EMS coordinator for the event. He's looking for as many as 80, and volunteers are asked to call him at 794-0575.

Also involved in the event is promoter Sid Bernstein, who brought the Beatles to America and was behind the failed Bethel '94 event, which was riddled with planning problems and lack of ticket sales.

``I think what he's doing is a very good thing,'' said Bernstein. ``People should have a place to show up and be welcome.''

Bernstein, who said he is working on his own large pop festival on the island of Malta or Puerto Rico in 1998, visited Howard's land last week and agreed to serve as a part-time adviser for the time-being. The event, he said, would give a message of civility and ``planting seeds.''

Bethel '97 has grand plans: performances by Woodstock veterans Melanie and Richie Havens, along with the Buddy Miles Express, whose front man once played with Jimi Hendrix in the Band of Gypsies.

The release also declared the festival, for the ``first time in history,'' to be smoke and alcohol free - a stance from which promoters quickly backed down.

``Well, uh, no,'' said Siegal yesterday. ``It's been explained to me they're going to try to adhere to that type of philosophy. But they're obviously not going to be in a position to try to stop (drinking and smoking).''

Last August, about 2,500 people made their way to the concert hosted by Howard, who provided portable toilets and a water tanker for the occasion. He was also issued a summons for operating a campsite without a permit, a charge that was later dismissed in court. Supervisor Allan Scott said yesterday he had not yet received an application for a mass gathering permit from Howard.

Since last year's show, site owner June Gelish died, and new owner Alan Gerry announced his multi-million-dollar plans for the 1,000-plus acres he's purchased surrounding the Woodstock site - plans that could include one or two music halls, a restaurant, a museum and transportation linking the theme park all together.

Last week, Gerry announced he would allow visitors on his site only in the daytime, for ``quiet reflection.'' Camping and nighttime visits would be banned. Woodstock Nation Foundation leader Abigail Storm quickly set up a tent on the site, challenging his decision. The two will be meeting this week to discuss the issue.