I downloaded a skin mod and saved it to where it's supposed to be saved but when i play the game im still Kyle how do i make it so that i am who ever i downloaded and not kyle?
If you downloaded a "skin mod", then I assume you have the .zip file for this skin somewhere. There is no particular place it is supposed to be.
However, once you have your .zip file, in order for it to be selectable in your profile menu, you have to extract the .pk3 file(s) from it to your base folder. This is done using the extract function of Winzip using the path for example,
"C:\Program Files\LucasArts\Star Wars JK II Jedi Outcast\GameData\Base"