From what I hear, Resident Evil: Nemesis will NOT interfere with the games (at least, majorly) since, Jill and Alice will NEVER meet. The only thing connecting the stories is, Nemesis.
Now, I do not believe that Paul Anderson is a great director (quite the opposite actually), because of this, I didn\'t expect a great game. But still, enjoyed it at the end.
And yes, I do believe he could\'ve made a better movie (which is true for a lot of movies), but I\'m not sure sticking to the original games would\'ve helped much. Espeically if they change everything (like the original George Remero script, which, while based on Resident Evil 1, VERY loosely based if you actually read it).