Make my map playable

[Nexus]

Hi, i've made a map in the editor alredy. And im now trying to get my map to be available to play in multiplayer. I've read many threads and seen lots of movies on how to make the map and so on but i cant get it right, my map just wont show up in the list of maps and i've been trying diffrent things for over 2 hours now.
To make it easy, i have 2 folders one named map and the other named set. In the map folder i have another folder called mymap and in this map i have:
mymap.mi
mymap.ply
mymap.net
mymap.set
and a file just called map.

In the set folder i have a folder named enviroment and in that folder i have a file named mymap.set

So where should i put these files and how to be able to play it on multiplayer?