Durable Laptop Suggestions for the Desert?

glarbl_blarbl asks: "My brother is assigned to the 82nd Airborne in the US Army. His last laptop was a Sony Vaio whose power jack and hard drive both failed after about three years, and it didn't see anything worse than a state college dorm. He has just been ordered back to Iraq, and as the family computer geek I have been trying to help him with some general advice - but I have no experience with laptops in exotic environments. Does anyone know which brands/models would be better suited for life in the desert?"