CBS will air another week of reruns of "The Late Show With David Letterman" beginning Monday, quelling rumors for now that a guest host will fill in for Letterman while he recovers from heart surgery.

Network officials remain tight-lipped about the idea of using a substitute host. Suggestions have ranged from out-of-work Jerry Seinfeld to red-hot Regis Philbin.

"We're talking about it daily and taking it on a week-by-week basis," CBS spokesman Chris Ender said yesterday.

Next week's slate of reruns will be chosen via the Internet. Fans can vote for their favorite episode at and pick any "Late Show" that has aired on CBS in the past 6 1/2 years. The top five favorites will air.

In its first week of repeats, "The Late Show" drew an average of 3.6 million viewers. That is down more than 2 million from the previous week of first-run episodes, one of which included an appearance by first lady Hillary Rodham Clinton.

Letterman publicist Steve Rubenstein said his 52-year-old boss is continuing to recover at an undisclosed location from quintuple bypass surgery two weeks ago. "Dave's still doing great," he said.