lol, ok back to del and his problems
i think i might b able to help u del, ill explain thru the most simple way of all! COLORFUL PICTURES!!!! XD (sry couldnt resist >.>;)
step 1:

go to the folder that holds all of that yummy JA+ goodness and select the highlighted files, to select just those hold down Ctrl and left click the files u want to select. good, now right click and choose copy.
step 2:

go to the C drive through My Computer and select the Program Files folder
step 3:

select the Lucasarts folder
step 4:

select the Star Wars Jedi Knight Jedi Academy folder
step 5:

select the Gamedata folder (note: if ur folder is set up like mine u might have 2 Gamedata folders, select the next one as well untill u come to a Gamedata folder that has a Base folder)
step 6:

select the Base folder
final step:

rightclick and choose paste, there, now ur JA+ should work, if it doesnt then ur screwd, lol
also look at these:

go back to Gamedata and select the Japlus folder, (if u have one...)

ur folder (i think) should look similar to this one
ok, i think that should do it, a good way to tell if it worked is if a pic of yoda holding up a + sign is there when u first start ur game
i hope this helped, gl del ^^
~Come to bring the Lady of Time to her final destination, The Big Bad Wolf~