This study will evaluate the ability of Apligraf to heal diabetic foot ulcers that have been present for at least 2 weeks and are between 1 - 16 cm2 in area. Patients will be randomized to either (50:50 chance) treatment with Apligraf or a saline moistened dressing regimen (standard therapy). All patients will receive standard cares for the ulcers which includes debridement, orthotics and off-loading throughout the treatment period.