Originally posted by Juha Avery 
 Well theres one thing you know that i cant edit anything... :( i dont know how and i dont know where to start and all those info's that people here give doesnt make any sense to me? 
 But if someone here can personally teach me, then i would be willing to learn to edit saber damages and textures. Thank you! 
 If i would try to edit anything more than sabers i think my head would explode from all the knowledge i wouldnt understand.   
 So can someone teach me? ive got all night.  
 Try these:  
http://www.lucasforums.com/showthread.php?s=&threadid=129450) 
http://www.lucasforums.com/showthread.php?s=&threadid=130491) 
 I tried to make them so that someone with zero experience could mod items by following the steps. 
 Let me know if this helps.  
 EDIT: Also, the most recent version of KotOR Tool will allow you to drag and drop to create custom items. It's extremely cool to use. I believe that Doom Dealers mod tutorial (referenced in Darth333's message above) includes a section on how to use this feature of the tool. Good luck!