1. wServer/realm/RealmManager.cs I believe, you will see a long vertical list like below containing all possible realm names, if you want one permanent realm name, remove them all except the first and rename the first, make sure to remove the comma as well if there is only gonna be one, the comma is only to separate the first from the next.
Code:
"Example",
"Example",
"Example",
"Example",
"Example",
"Example",
"Example",
"Example",
"AndSoOn"
2. Open Yogda and open up the .swf in there, and search for any strings (text) you want to change then double click the line and change it, obviously, then click save/compile/whatever the button is.
3. There is a folder in the Server project with the SFX files, and then the code that makes them play/function or whatever is in the file sfx.cs I believe, I'm not sure if that is the name, and there probably is some code about it in program.cs too maybe.