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Prior to taking a break to seek treatment, David Arquette celebrated the new year over the weekend in style at the Beacher's Madhouse at the Roosevelt Hotel in Hollywood.

The 39-year-old actor, along with fellow comedian and partner Jeff Beacher, hosted a "Sneak Peek" of their vaudeville-inspired club which doesn't officially open until February 14. X17online exclusively has learned Arquette was "sober all night" during the celebrity-packed New Year's Eve bash.

Although Beacher's Madhouse hasn't opened to the public, the club has already hosted numerous star-studded events for private celebrity parties including the recent movie premiere after-party for Black Swan.

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Just this morning, David's estranged wife Courteney Cox said the following, "I really admire David and his choice to take charge and better his life. I love and support him."

Arquette is reportedly seeking treatment at the Betty Ford Center in Rancho Mirage.