Teri Hatcher and a friend were recently discussing what would be on her "bucket list," a list of things to do before she dies.

So what's on it? "I want to learn to play a couple of songs on the guitar. I want to learn a few of those fancy dances from one of those Dancing with the Stars teachers. And I want to run a triathlon," the Desperate Housewives star tells PEOPLE.

The timing was perfect for Hatcher, when her show's parent company Disney asked her to lead a team in this year's Nautica Malibu Triathlon on Sept. 13. In addition to checking off an activity from her bucket list, 44-year-old Hatcher is also raising money to benefit the Children’s Hospital Los Angeles.