The influence system as it is in KOTOR 2 isn't in KOTOR 1. And no, you can't train party members as Jedi in K1.
"There is something going on in time and space, and beyond time and space, which, whether we like it or not, spells duty." -Winston Churchill
"For of all sad words of tongue or pen, The saddest are these: 'It might have been!'" -John Whittier
"Apathy is death." -Kreia