"EXTREME MAKEOVER: HOME EDITION" REBUILDS THE DANGEROUS HOME OF A 14-YEAR-OLD GIRL SUFFERING FROM A LIFE THREATENING BLOOD DISEASE WHO HAS DEDICATED HER LIFE TO SPREADING AWARENESS ABOUT BLOOD DONATIONS

"Supernanny" Jo Frost Volunteers with Designer Eduardo Xol at a Toy Drive

"Bell Family" -- "Extreme Makeover: Home Edition" will be traveling to Tucson, Arizona, to tell American Red Cross hero Lizzie Bell and her family that they'll have a new home in only seven days. The episode airs SUNDAY, SEPTEMBER 13 (8:00-9:00 p.m., ET) on the ABC Television Network. (Rebroadcast: OAD: 3/22/09)

Lizzie Bell was born with a rare blood condition that is characterized by a failure of the bone marrow to produce red blood cells. Less than 700 kids in the world are stricken with this disease, and 14-year-old Lizzie is one of them. The only thing that has kept her alive are the routine blood transfusions she has every two-three weeks. If she gets sick, she often has to go to the hospital so doctors can monitor her and keep her stable.

When Lizzie was five, she and her mother decided to visit her local blood bank. There they learned that the refrigerators that should have been full of blood weren't. They didn't understand until that day just how desperate the nation is for donated blood, and decided to do something about it. The family established the John P. Bell Foundation, and for the past ten years little Lizzie and her family have been working hard to raise awareness about the desperate and ongoing need for blood donations.

Lizzie was given the Red Cross Hero Award for her ambassadorship in telling others about blood drives and donating blood. But while she's been helping countless others, the Bells' home has been neglected because of Lizzie's high medical bills. The home is sinking, has gaping cracks in the cement floor, suffers mold and termite problems and needs countless repairs. These conditions are dangerous to Lizzie's health and her vulnerable immune system, so it's up to Ty and the designers to help the Bells spread the word, lighten the load and give Lizzie a comfortable and healthy home.

In addition, ABC's "Supernanny" Jo Frost joins designer Eduardo Xol at one of the family's blood drive awareness events by collecting and redistributing toys for ill children in the community. While Ty and the designers, local builder John Wesley Miller Companies and hundreds of volunteers and workers are building their home, the Bell family will go on vacation to New York.

The design team for this episode of "Extreme Makeover: Home Edition" will feature team leader Ty Pennington and designers Ed Sanders, Eduardo Xol, Rib Hillis and Didiayer Synder. The series is produced by Endemol USA, a division of Endemol Holding. It's executive-produced by Anthony Dominici. David Goldberg is the president of Endemol USA. The series is broadcast with Spanish subtitles via secondary closed captioning. This program carries a TV-PG parental guideline.

For more information on "Extreme Makeover: Home Edition," visit ABC.com.