TOD:
The problem with remakes is that, if you remake a classic...or even just a successful film, you will always be competing with the memory of the original. Therefore, you should only remake flops.
Or, you could take the basic characters and plot of that successful film and transport them to a new setting. BROKEN LANCE (1954) with Spencer Tracy was a remake of HOUSE OF STRANGERS (1949) with Edward G. Robinson, except one was a western and the other a "modern" film noir. Both were excellent and successful, because they really didn't compete with each other.