Second step, as Razor suggests, is to change your Base Directories back to default locations and put DAZ on your C:/ Drive.

Third step is hashing out where to put your libraries and related DIM data. The Manifest Archive tells DIM what you have installed. It's sort of important. I keep my manifest archive with my Daz documents on the C:Drive. I do have DIM put the Package Archive in the settings Downloads tab on a different drive.

This shouldn't be any sort of ordeal.

In DAZ, your Connect Path should end with /Studio/My Daz Connect Library .eg C:/Users/Torquinox/Documents/Daz 3D/Studio/My Daz Connect Library.