I found this in a few different places around the 'net - hopefully it's helpful:
You Can Bypass the Recycle Bin On the Fly.
To bypass the Recycle Bin on a one-time basis, when you are deleting a file (or a group of selected files):
- Press and hold down the shift-key while you press the del-key (or use the delete command). You receive the following confirmation-request message:
Are you sure you want to send <filename> to the Recycle Bin?