Upgrade German right not possible?

Bought at Stop-Computer. - With all due caution, however: an upgrade, in which the existing programs and data are obtained, does not seem to be possible. There is an acknowledgment that between different languages ​​- so here: - can not be upgraded DE (nice word!). One should inform "the internet" how to do it. No further details have to. I have so many programs and data on the disk that I if I can not get programs and settings, just buy a new PC. Preliminary state of affairs, in which I want to hurt anyone: A complete nine installation may be possible to upgrade with the acquisition of programs and settings but not.

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ADDENDUM: My brief consultation on this matter was answered by Stop computer phone so: All the experts would say again and again that a "Drüber-install" is not advisable. We have then that is a continued slow, quasi double operating system, with all faults Vista. Made sense to take the work on and a) to secure the data on a disk and b) to format the disk / partition and set up everything.

I suppose that an answer is reasonable. But I did not have time to do that. I expect, with all program installations, leg matches of the data, with about 3 x 6 hours of work. I let now the times with the three *. If I have found time and have reinstalled, can improve but.

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I have emailed, there came a telephone message from the seller, very quickly: The "Above and install" is not useful in the opinion of all experts. One would then basically two - slow - operating systems on the PC. Can I understand. I sit now times up 1 star. When I made the reinstallation, then maybe the full 5. Win 7 I know yes. It now has to work just everything.