Jake, from the Windows & .net website (http://www.winnetmag.com/) : This is called processor affinity where you set a process to use a specific processor on a multi-processor system. Start Task Manager (Right click on the task bar and select Task Manager) Click the Processes tab Right click on the program and select "Set Affinity" You can check the processors you want the program to run on (uncheck the ones you don't want it to use) You cannot set affinity for a service, or set affinity for a program which has not yet been started. Doug Doug Wheeler Sr. Technical Analyst - Information Resources Neenah Technical Center Georgia-Pacific Corporation email : mailto:[log in to unmask] voice : 920.729.8178 fax : 920.729.8164 -----Original Message----- From: Brenneman, Jake (MSNBCi) [mailto:[log in to unmask]] Sent: Tuesday, July 09, 2002 7:06 PM To: [log in to unmask] Subject: Processor affinity? I believe I've been told no before, but to be sure, does anybody know how to permanently configure processor affinity for either LSMTP or LISTSERV on a Win2K server? Thanks, Jake