[FWTools] ogr2ogr: formating columns

["Möckel, Alexander"]

Hello,
I'm using ogr2ogr to convert data to ESRI-Shapefile. An additional DBF File is also created. In the input gml File I have a token IDENT with such values: 91-2005-16.061.085.2650.2 and a token DAT with such values: 01.11.2005. After converting in the DBF File these token are both columns of type number, and the values are 91.0 and 1.11. Is there any possibility, to tell ogr2ogr that the first token should be a string and the second a date column?

Thanks
Alex