Hi Michel, Maybe this might help you out: http://www.microchip.com/1010/pline/tools/picmicro/icds/icd2/index.htm Look for the document entitled 'Uninstalling Incorrect USB Device Drivers'. Best regards, Ken Pergola P.S. URL might get word-wrapped -- might need to sew it back together... -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu