Basically just select objects/vertices and run>SimpleLattice. This will add a lattice object, creates modifiers and vertex groups. You can choose the alignment of the lattice, the number of control ...
(based on directX_blender by littleneo) A DirectX importer addon for Blender 2.7 Click "File," "User Preferences," "Add-ons" Click "Install add-on from file..." Choose the downloaded ...