Delphi edi to xml and xml to edi converter

I need to have written a unit or tool that can convert edi to xml and xml to edi. there are aprox different schema types that need conversion. The standard is edifact and I have included examples for the file(1 edfact file and 1 xml file) I have the schemas and I have a tool that can validate if the conversion are correct to what I need to write the converter. I will pay per schema that the converter can convert. I am open to fair suggestions The above need to be written in Delphi 7 or in Delphi 2009