Do you mean the Affinity setting in Task Manager? Open Task Manager and click on the Processes tab. This should list all running programs. Right click on any of these and select Affinity. If you have an HT CPU you can select the program to run on both, CPU0 or CPU1. I've tried this before but I can't say if it had any effect or not. bones -----Original Message----- From: jhb_airlines-bounce@xxxxxxxxxxxxx [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of FrankTurley@xxxxxxx Sent: 09 September 2006 13:14 To: jhb_airlines@xxxxxxxxxxxxx Subject: [jhb_airlines] Re: I've Seen The Light; perhaps In a message dated 09/09/2006 10:52:36 GMT Daylight Time, gwinsk@xxxxxxx writes: Any comments from those more knowledgeable? Gerry, There is a set up somewhere which with my P4 processor allows me to specify which stream things run in. I seem to remember setting FS9 to one stream and everything else to the other. Someone who is more knowledgeable will I hope tell you more. Frank T.