Tried the wiki and faq but now i REALY feel dumb. None have asked this question so...

I have a ReadyNAS 102 and want it to do my downloads but i can't get Transmission GUI to move my downloaded files to the folder I want.
And i guess that entering paths here is in linux way...?!
My nas i named ToddeNAS and it have the ip 192.168.1.22 and i have made a folder called Nerladdningar where i want all my downloads moved.
Can someone please explaine to me how this works and please be easy and let it be simple. I want to learn how it's done not a line telling me what to put in.
Thanks in advanced
ToddeSwe