You could (if you wanted to event it), just make each skill individually then have some sort of common event that check's your players' levels. If playerlvl=2, then player learns smiteR1. Later, if playerlvl=5, then remove player's skill smiteR1 and learn smiteR2. You'd need a common event for each character. It's really barbaric, so i would suggest using a script. I think I saw something like this yesterday surfing on .org... i don't remember if i was looking at VX scripts or XP though.