11.   A rotating crew of hosts replaces the wisecracking Regis Philbin.

12.   On Tuesday, the crew replaced the computer and then installed the software, officials said.

13.   Space officials authorized the crew to replace the computer Sunday with another that had been brought aboard earlier this year.

14.   Space officials said the crew replaced the computer Sunday with another that had been brought aboard earlier this year, the Interfax news agency reported.

15.   That system also failed until the crew replaced the mechanism that ignites the canisters, or candles.

16.   The computer began working again after the crew replaced an unspecified part Tuesday.

17.   The construction crew was replacing bricks and working on windows when the facade tumbled into the courtyard of the building, authorities said.

18.   The crew replaced a faulty computer block later Monday and started tests necessary to put it back in operation.

19.   The crew will replace the electricity-producing wings with a smaller yet stronger pair beginning Monday with the first of five demanding spacewalks to enhance Hubble.

20.   The repair effort required the crew to replace the central block of the main computer and then install the software, officials said.