virtualbox.org

I have windows 2000 on my virtual box.
I need to divide the HD drives in C: and D:
How do I do?

It is very important, I have an old program that requires the D: drive to work

You can try a partitioning program, but you can also add a second virtual hard drive to it. When you do that, keep in mind that the drive is like a new hard drive for your computer, it needs a partition first and be formatted before you can use it.