Thanks for your response and the idea with the Interface Pack.

Unfortunately with this package the default character set for this Windows will be cyrillic. Therefore the german screenshot is also displayed cyrillic. German takes most characters from the ASCII (lower 128 characters) and only four characters from the upper 128, in this case the cyrillic.
In the screenshot it is just one in the sentence "Es wird ausdrXcklich" where the "X" stands for the cyrillic character.

I think the setup program would have to display every piece of text in the font with the right character set for each language, so it is shown correct on every system language. At least this is the only thing (besides unicode of course) that I found and works for our software (we want to install ).

But I guess the SetupBuilder doesn't do that (yet).

Thanks anyway
Severin