it always depend on which map u want to add. if it is like u want to add the new ep6 maps then here u go.
copy the svmaps ( server side) 68/69 and put them in again (with the name which map that map should be) for example 71/72. (u use that maps cause of the size that are big enough ;) )
after u have done that u need to have the map files for the client import these into the client with the same number ( 71 or 72).
Now go and edit the map.ini ( server side) to set up the respawm point etc u can copy it again from 68/69 just rename again to 71/71 ;). after u have done that u basicly got the basic. now to have all working on the map u need to add in the svmaps the location of the mobs npc´s and portals if u wish to use them (therefore u can use sh studio from castor)
that is basicly all :o
ahhh and u need ofc a bit the brain.exe not much since i told u the most already but yh