To move this fragile, 170-year-old farmhouse, Donna and Barry Jensen are taking a huge gamble. The house will take a winding route through the tight streets of Grosse Ile, Mich., dodging menacing tree limbs and squeezing under dangerous utility lines. But the biggest challenge comes at the end. A tight left turn over a guardrail and past a telephone pole could reduce this house-of-cards to toothpicks. It's an emotional journey for the Jensen family who can't give up on their dream of living in an historic home.