Problems with the MES

[Evilchronos]

So i downloaded glitchy's program today and I was hoping to get the hang of it right away. Unfortunately I had a few problems that I would like to ask for advice on. When it comes to this I am brand spanking new at it so just remember that lol. When I first open the program is has a "Load, Save" screen, where do i save or what folders do i save or load from?

Secondly, before I even do anything i need to get this question out of the way, Do you need to be on a private server to use weapon/any type of model changing? Or can It be on my real main characters normal servers.

When I tried to switch my vengeful weapons to warglaives, I followed the video directly and when I go in game nothing has changed unfortunately. Can any item cache work for this or do I need a specific cache for my vengeful daggers to be converted.

Any help is appreciated. I can talk on aim if thats any easier to explain or discuss this. Thank you so much in advance!
-Chrono-