you can't. that feature was added in Battlfront 2.
No, you can't be a Jedi or Sith lord in star wars battlefront 1, only in Battlefront 2 which I'm playing right now :)
You cannot play as them. they are virtualy invincible.
You can't be jedi in Starwars Battlefront 1, but there can be jedi On the battlefield, by going to options before starting a battle.
you can't. but you can in battlefront 2
You don't. The Hero class wasn't made until Battlefront 2
No, I don't think you can.
No.
you cant only if u mod it
On Star Wars Battlefront 1, you can not get a lightsaber. However, you can play as a Jedi or a Sith on Star Wars Battlefront 2, Renegade Squadron, and Elite Squadron.
You can not because in Star Wars Battlefront I there are no playable Jedi or Sith as it isn't part of the game you can only play with soldiers, droids etc. However its successor Battlefront II allows you to play with Sith and Jedi (I have got it and its pretty amazing stuff). My advice would be to get that if you want to play as a hero or villain.
you unlock it
Omar