Can anybody please tell me in which episodes of BtVS were David, James and SMG (all together)?

I know they are all together in becoming part one and two

tu mean when they were fighting altogether against the other vampiros ? (in The Magic Box) in season 3 in "Lovers Walk", episode 8. :)

Off the parte superior, arriba of my head, they're also all in S02E03 School Hard, though not all together.