Actor David Arquette is opening up to Oprah Winfrey about his history with drugs and alcohol, as well as his recent stay in rehab.

When asked when his problems with alcohol began, Arquette tells Winfrey:

    "When I had my first drink of beer, I must have been four-years-old. I was down in the basement with my dad and beer was there and I just grabbed it and drank it. And I remember that. It's one of my earliest memories. I seriously started drinking probably when I was about 12."

The Scream 4 actor, 39, checked himself into Betty Ford on December 29, and tells the 57-year-old talk show host that he's been sober ever since.

As for his issues with drugs, Arquette reveals: "I stole pot from my father when I was eight years old."

Arquette says his estranged wife Courteney Cox, 46, and his sister Patricia Arquette were responsible for getting him to rehab at the end of last year. When asked about their intervention, he says:

    "I came back from Miami and I had taken a nap. I woke up and Patricia and Courteney were at my bed. Courteney had a cup of coffee. I was like, 'What are you two doing here together?' I already knew. Courteney's like, 'Do you mind coming out to the living room for a minute?' I said, 'Sure, let me get dressed.' I put on this white outfit and came out. I peeked my head out and [I saw] my best friend Hartwell and my business partner and some guy I don't know. I go 'What up, Turkeys? I guess this is my intervention!'"

David says he and Courteney "are still great friends and getting along really well." The couple are parents to six-year-old daughter Coco.

Find out how David first met Courteney ... after the jump.