hi, when i write root=r"c:\" i get problems with the "\", but when "\" isnt the last character in this string, e.g. root=r"c:\windows", it works. is this a bug ? yours, uwe -- Uwe.Schmitt at num.uni-sb.de Universität des Saarlandes phone: +49 (0)681/302-2468 Geb. 36.1, Zi. 4.17, PF 151150 D-66041 Saarbrücken http://www.rocksport.de