Yes, This is the 64 bit Window 7 and I did look the the Driver64 folder. It contains the following files: Win7_64 (Folder with a few .jpeg and .gif files) mchpusb mchpusb mchpusb.sys mchpusb64.sys ReadMe The read me file contains: ============================================================================= ReadMe.txt ============================================================================= 31 Mar 2008 - PRJ 21 Jul 2009 - EAM 14 Oct 2008 - EAM 30 Nov 2009 - EAM 13 Apr 2009 - EAM ============================================================================= 64-BIT DRIVERS -------------- Use these drivers for 64-bit Windows operating systems only, i.e.: * Windows XP 64 * Windows Vista 64 * Windows 7 64 NOTE: Operation will require the new, modified MPLBCOMM dll found in MPLAB IDE v8.14 and higher. For all 32-bit Windows OSs, use the drivers found in the specific tool directory. For example: C:\Program Files\Microchip\MPLAB IDE\REAL ICE\Drivers INSTALLATION INSTRUCTIONS (in HTML) ----------------------------------- Windows 64-bit OSs: In the OS-specific subdirectory of this directory. Windows 32-bit OSs: In the specific-tool directory, in the Drivers subdirectory. When I browse to C: Program Files (x86)\Microchip\MPLAB IDE\Drivers64\Win7_64 I get the message "Please enter another location" and "The location you specified does not contain any driver software installation files." Again, I am stuck. On the plus side, the ICD3 works fine on the Windows XP system. I'm able to work with it. But the goal is to get Windows 7 to recognize a USB driver. ----- Original Message ----- From: "WH Tan" To: "Microcontroller discussion list - Public." Sent: Sunday, May 9, 2010 12:32:22 PM GMT -05:00 US/Canada Eastern Subject: Re: [PIC] ICD3 and Windows 7 Are you using 64-bit Windows 7? 64-bit version uses the driver inside the folder "Driver64". Best regards, -- WH Tan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist