ALL-time “Jeopardy!” champ Ken Jennings wants to help you win some money.

Jennings will serve as the “Ask the Expert” lifeline on “Who Wants to Be a Millionaire,” hosted by Meredith Vieira (12:30 p.m./Ch. 7).

Jennings will appear on the show from Nov. 3-7 and will be available to contestants who need to use a lifeline once they get past the $1,000 level.

Jennings won over $2.5 million on “Jeopardy!” in 2004 during a run of 74 consecutive victories.

It’s the longest winning streak in game-show history.