it is a common problem you have (plo_koon_follower). I'm not sure if you have fixed the problem, since you haven't gotten back to us. But the main thing you are doing wrong is you are trying to put the mods on is CD. Make sure you put it on your hard drive. the default path to the game on your hard drive is C:\Program Files\LucasArts\Star Wars Jedi Knight Jedi Academy\GameData\base A lot of people do this wrong. Do not try to write it on to your CD (it probably won't let you anyway)
the first thing that ppl should learn on computers in my experiece is directory structures
i've helped soooooooooooooo many ppl who have just put the files in the wrong place :D
Don't reopen week-old topics. And you may not see any yet, but there will be. Win98 is reaching the obsolesence point sometime this year, methinks.