You turn your party members into jedi by gaining influence with them, then when you talk to them you'll eventually run into a conversation that says (influence: success) and one of those will lead you to a conversation about the force or jedi. You don't get many opportunities to gain influence by talking to Bao-Dur but you can usually gain influence with him by performing good actions while he's in your party. i know for sure that you'll gain influence with him if you do the light side option of the "Missing Mandalorian" quest on Dxun. (if you're dark side you can still finish the quest by telling his captain the truth and make up for the light side points). i can't remember other instances besides his initial conversation with you when you get him but they have a walkthrough of the game and many others on gamefaqs.com. Go to the site, find your game and click on faq.