Thank you altef, I already had the code lines I had to use, where I had the problem with "SkinManager" not being recognized, sth like that.
Your link "works"....thank you.
1st there was some message saying that I should update some alpha controls, sth like that but I accidentally closed it, so I will try to get it again.
Anyway, currently it doesn't apply skin to the whole setup, it is just what you can see on this pic:
EDIT: Here is the message I get:
Any idea?
Thank you for your replies and for your time.