Quick question???

Rating: 7/10 (27 May 2006)

As a child I watched the X-Men cartoons, and I was just wondering what is going on in these X-Men movies? I'm pretty sure that the cartoons were accurate with the comics, but I have seen the second and now the Last Stand and I'm not really sure where these story lines are coming from? Are these in comics? I've visited the Marvel website and when reading the character bios nowhere does it describe any of those events. Did I just miss something? Let me know if this is in keeping with the comics or if things are just being improvised to meet the lack of knowledge by the general public. Thanx.
p.s.When did the Phoenix become so damn powerful???