loadig files with dynamic columns with missing row headers

Hi ,

I need to import data from flat files to a target table,I have no control of the incoming files in terms of number  of columns  ,row header, data types,What is the best approach  to handle  this in ssis,how to handle the files ,if some them are  also missing row headers and some with missing  columns  and some with missing row headers  order of the column changes .

Many Thanks