How to import .x file in 3dmax?

In 3dmax,i can export .x file with 'PandaDXExport6.dle'.How to import .x file ?is there any file like'PandaDXExport6.dli'?

This is not a unity related question. Don't know what version of max your are using, However here is an OLD 3ds max DirectX format .X Importer You could also try using an intermediary program Like Ultimate Unwrap 3D to convert the model.