I put some pictures up to show how to convert the eagle library's in to diptrace library's. There is still one catch. You will get only one file, a .eli file. A normal DipTrace library has 2 files, a .eli and a .lib file. The eli contains the schematic and the lib the pattern of the part. If there are custom parts you will have to export the pattern from the eli file, save it in an lib file and reattach the modified pattern to the part.