I've been going at it for a week, finally success! The secret, CloneCD4 :). I never tried it until just now. Since my pc is set Canada instead of US, I have the Amplify Weak Sector option and Hide CD option unlocked. What I have been testing is Project Earth, and I will try Morrowind soon.
Now I don't have another PC with a normal drive so I don't know if it'll work on anything else but my Plex 8432. Everytime I tried starting the game, I got a re-insert game cd message. With the AWS setting and Hide CD it works now, but if I take off the Hide CD setting I'll get the message again. I know this setting is to be used with CDRW drives, but does that mean I made a succesful burn and will work in a normal drive too without the use of this option?