Windows (and its command line or "DOS mode") are not the focus of this forum.
Also, since you're obviously working with German data and are quite probably posting from the network of a well-known German company, is there a special reason you're posting this in the English section of a German hobbyist forum of all places?
Using a foreign language does not make this a free support forum for companies.
Maybe you can recommend to me a web forum where I'll get a free train ride.
Otherwise, if you're in need of IT consulting or tech support, please hire a professional!
“It is impossible to defeat an ignorant man in argument.” (William G. McAdoo)