extensions RD0, RD1

From: RichG (rgiles@aacro.com)
Date: 08/30/02 

From: "RichG" <rgiles@aacro.com>
Date: Fri, 30 Aug 2002 12:44:46 -0700

I have a clients computer that has hunderds of files with
a .RD0 or .RD1 extension. The name of the file is always
the same as an executable. For example I have a
peachw.exe and a peachw.rd0.
If I run the peachw.exe get error messages. If I rename
peachw.rd0 to peachw.exe and run it, it works fine.
Is this a known virus?
I guess I can create a VB program to remove the .exe and
rename the .rd0 but I need to be sure first.