TO SEND OR RECEIVE A FILE, CLICK THE FOLLOWING LINK:
TO SEND A FILE: Click the upload button... it is the small up arrow button at the center top.
TO GET A FILE: Click the name of the file you want to download, click the download button that appears to the right.
TO ACCESS TWIN CONCEPTS' IDISK FROM A MACINTOSH:
In the Finder, click the Go menu and select iDisk > Other User's Public Folder
Type in twinconcepts hit ok
My Public Folder should be mounted on your desktop now, so just drag files as if it was a hard drive on your Mac.