How do i FTP with nexgen? ive downloaded a folder called "ftp client" but where should i put it? i doesnt work just putting it in the "nexgen" folder.

I wouldn’t use nexgen at all, it's just not stable enough for me. You may want to give Unleash-X a shot. If I didn't know any better I would say it is what nexgen wanted to be.
That's just my own opinion though.
I know that didn't answer your question.