Upload unicode document

I try to upload an unicode document. When I load it up through WinSCP it doesn't work. When I load the same document up through FTP it works. When I zip it and then load it up through WinSCP, I have to unzip it on the server (is it possible to unzip in WinSCP?), than it does work.
Why it is not working when I load it up at the normal way?
Can you help me with this problem?

I suppose that you transfer the file in ASCII mode, which does not support Unicode. Make sure that you select Binary mode on copy confirmation dialog.

Thanks for that fast answer. Only I would like to know now how I can change from ASCII to Binary mode. Can you tell me that, because I can't find it.

This screenshot should give you some idea.

:D THANKS, not only for the good solution (IT WORKS), but also for the quick answering to my question.