Simplify the following text for a Grade 6 native English-speaking person.
Original: Since February 2001 , she has served as the co-host of Live with Regis and Kelly , alongside Regis Philbin , taking the show 's rating to a new high when she replaced previous Live co-host Kathie Lee Gifford .
Simplified: Since February 2001 , she has served as the co-host of Live with Regis and Kelly , along with Regis Philbin .