How can you put your Mugen characters in your Mugen game

When you download your character unzip it to your mugen folder. Then copy the name of the folder. Now go to the data folder and open " select.def " with notepad or word pad.
Scroll down until you see this line:

kfm, stages/kfm.def

paste the name underneath it.
(don't worry you don't have to put the stage thing unless your mugen is REAAALY old)