I asked if it was possible to remove the the sections "Powered by YAF 1.9.3 | YAF © 2003-2009, Yet Another Forum.NET" or at least remove the links, happy to give you credit and of couse you deserve

Yes, it's possible. I do not provide instructions, though. Someone else may be able to assist.

If It go in the middle of the footer in the darker part in a visible clouer but without the link, that would be great.

Thsi forum is filled with knowledgable people that just like to look at laugh at noob questions like that. Dont expect a detailed response. other than that general questions such as how to edit your main logo get answered super quick!