Shame on me (for not reading all my mail) and big thanks to all of you who replied anyway. Thanks Uli : Dr. Ulrich Hahn email: ulrich.hahn@zdv.uni-tuebingen.de : : Zentrum f=FCr Datenverarbeitung Tel: + (49) 07071 29 70315 : : Universit=E4t T=FCbingen FAX: + (49) 07071 29 5912 : -----------------------------------------------------------------------