Just wanted to share something that drove me bit bonkers for a while.
I have several hard disks on my windows machines that I want to access from within beatbox+pcmsynth etc
Caustic runs from the c: drive and can only see C:\Users\chris\Documents as the highest root location from within the disk browser.
My collection of single cycle synth waveforms (for me) are on drive J:\music\singleCycleWavs
So to get access to them from within caustic I create a junction that links the J directory to the C:\Users\chris\Documents\singleCycleWavs folder like so:
start > run > cmd.exe (press enter)
in the cmd window:
mklink /j singleCycleWavs j:\music\singleCycleWavs
Now when I go to Caustic and want to get at those samples, I can access C:\Users\chris\Documents\singleCycleWavs which links to my J: drive.
Hope this helps others :)