Nero Stalls - DVD Movie

I am using win 2000, AMD Barton 2500+ CPU, LG DVD burner.

I want to make a DVD movie from an .avi file and i decided to use Nero Vision express 3 which is a tril verson right now. When i bun a data cd everything works fine, but whne i go to burn a movie cd the program stalls, or my computer will shut down after i click the burn button and it starts doing its thing after about a minuite.