Mods in dom3 are just text files that are named in to .dm files by giving the extension in name. Easy way to create to an empty .dm file is to copy a .dm file of some mod you have already, and paste that copy somewhere. Then change the name and of the copied file and delete all of its contents. Ta'Da! Empty .dm file.
So I take it that you want to see the in-game name lists? Don't know if that is possible, at least not without code diving. Adding names to a name list is very simple, thought. If you want to get started, the Mytheology (just do a forum search for Mytheology) mod by Psientist has added about 60 names to both male and female indy name lists, you could start from there. The mod commands for adding adding name are extraordinary simple, so that is a good point to start. Here is a sample command that adds 3 names to the indy male name list.
Code:
#selectnametype 100
#addname "Dude the Dudelicious"
#addname "Guy"
#addname "Commander Thickwood"
#end
As for your dreams about adding a new magic path, I must say that is not possible. You'd have to overwrite all mages and spells of a excisting path and even then the result won't likely be useful, since the path would maintain its old icon and name. The modding tools are quite limited in dom3, so you'll have to get used to either compromising a lot, or using clever hacks.
P.S: I usually don't bother posting images on the forums. I upload them to imageshack or xs.to and use the [IMG] tags to link to the picture.