Do what Fruit Bat /\0/\ says. There is no way that your OS will recognise that your drive is full and use the other drive. There is a danger that you might corrupt your file allocation tables if you completely fill the C: drive and that would give you much greater problems. By moving your Documents folder to D: all the programs that currently save to that location will still do so but on the D: drive.
Ok I will - just looks a little daunting for a nooby, messing with the registry. When I bought the pc is was a 1000gb stripe set up, but it crashed badly and I had to re-ghost the whole thing, only failed to get the stripe set up back so now i have these 2 separate drives.
This thread is now locked and can not be replied to.