S-plus code and data arrangement

Dear All: When I apply sample()in S-plus to do for example, bootstrapping, let's say we have four patients(patient ID is 1,2,3,4), one of the results can be 4,4,4,4, how can I do to make NONMEM treat this result as four patients, not just one patient. Do I need do something with data arrangement or some other functions in S-plus can deal with this. Any instructions will be highly appreciated. Zheng