We don't have a download link yet, but you can find it using Google.
Review
RICOH Ridoc Desk Navigator is developed by Ricoh and is used by 63 users of Software Informer. The most popular versions of this product among our users are: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 and 2.1. The names of program executable files are PLTBar.exe, RExp.exe. The product will soon be reviewed by our informers.
