There are two programs in existence that can do that. DAZ3D does sell one but the name escapes me ATM. There is a freebie that can do that also. However, you need to generate those install files manually first in order to use them with DIM. The freebie I have used and it does work very well for converting typical zips to DIM ready zips. But it is a hassle to attempt conversions of many files, too time-consuming.