I discovered the Manga on the internet before seeing the Divx movie. It looks like the downloads doesn't cover the begining, I could be wrong. If you don't know the begining the following chapters could be less understandable.
I suppose if you like detective stories, this series seems to be similar to Scobbie Doo with more emotions and love rivaries....
Oh the link to the begining is:
Detective Conan 1 - Read Detective Conan chapter 1 online at One Manga