Wow thanks for the info, the first link in Google seems to be pretty hopeful. http://www.techgalaxy.net/blog/20041203214445.html Regards, Andrew From: Bob Fronk Sent: Wed 12/28/2005 8:59 AM To: [ExchangeList] Subject: [exchangelist] RE: IMF removal http://www.MSExchange.org/ He is speaking of Performance Monitor... The built in MS Perfmon... Just type perfmon in START/RUN. You will need to read up on how to use Perfmon, so start Googling..... (IE: Google - IMF Perfmon, Troubleshooting IMF, etc.) You will get much good info that way. Bob Fronk, MCSE bfronk@xxxxxxxxxxxxxxxx