startSettings.load( is );
startSettings.put( "XDataSourceClass", "net.xoetrope.optional.data.XOptionalDataSource" );
is.close();
URL startupFile = theProject.findResource( theProject.getStartupFile());
File outputFile = new File( startupFile.getFile());
BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream( outputFile.toString() ));
startSettings.store( bos, "XUI startup properties, automatically modified by XUI at " + new java.util.Date().toString());
bos.flush();