Oprah Winfrey right, talks with Paula Zahn left, at the National Cable & Telecommunications Association's Cable Show 2011 at McCormick Place in Chicago (June 16, 2011)

*During a cable industry trade show in Chicago today, Oprah Winfrey said says she’s ready to give 100 percent of her attention to nurturing her six-month-old Oprah Winfrey Network.

As OWN was under development, Winfrey said she was also trying to finish the last 130 episodes of her syndicated TV talk show, the last episode of which aired on May 25. With “The Oprah Winfrey Show” now out of the way, Winfrey said she can be “all in” at OWN.

“I now have the time to be committed to the nurturing of this network,” Winfrey said in an interview with Paula Zahn at the National Cable & Telecommunications Association’s Cable Show 2011. “The vacation I thought I was going to have is kind of over … at least for the time being.”

Rosie O’Donnell, Shania Twain, Sarah Ferguson and Winfrey friend Gayle King have first-season shows on the commercially-supported OWN, which offers a mix of talk and reality shows, films and original documentaries.

Winfrey will appear in “Oprah’s Next Chapter,” in which she travels the world in search of interesting stories, and “Season 25: Oprah Behind the Scenes,” a chronicle of her final talk show year. She will also be seen in the series “Oprah Presents Master Class” and “Your OWN Show: Oprah’s Search for the Next TV Star.”

Winfrey said there are two people she was never able to get on her talk show she’d still like to interview — O.J. Simpson and Susan Smith, the South Carolina woman convicted of drowning her two young sons.

She said she’s been surprised by the “bumps along the way” in launching her network, which has seen low initial ratings and the abrupt exit of its top executive. But she said her focus has always been on her audience, not numbers.

“I let other people worry about ratings,” she said. “For me, it is always about service to the viewers. I have committed everything I have to this cable venture. I wouldn’t bet against me.”