...unless you set up a symbolic link to it.

http://en.wikipedia.org/wiki/NTFS_symbolic_link tells you about symbolic links in general - because I'm using Windows XP on my laptop, I had to add the ability to use symbolic links using a piece of freeware called "junction.exe", but I understand that symbolic linkage is available as part of Windows Vista and later.

What happens is that you move the contents of "C:\bb\RealTracks - Demos" somewhere else - say "F:\bb\RealTracks - Demos", and then tell Windows that any time an application asks for something from a file in "C:\bb\RealTracks - Demos" it should look on drive F. As far as as the application is concerned, the files are in their original place on drive C.

I used this for the RealTracks themselves when I thought (wrongly, as it happens) that it might resolve a problem I was having with the generation of RealTracks. The method obviously has a wider application when you're running out of disc space for any application.