I've lost all references to a method/program to permanently set affinity for dual/quad core processors. Recall there being a link in this forum, but a search does not seem to turn up a permanent method of doing this.As I recall the method/program made a change to an .exe which made the core assignment automatic.Can anyone help?Jim Harnes

I use the utility from Tom's Hardware Guide. A link to the download is available here...http://www.tomshardware.com/2004/05/28/get...buck/index.htmlHope this is what you're looking for.EwingKATLAlcohol, Tobacco and Firearms should be a store, not a government agency.MSI K8N Neo2 PlatinumAMD Opteron 185 2.6 Ghz Dual Core2GB Kingston HyperX (2X1GB) Dual Channel DDR 2-3-2-6 @ 1TXFX nVIDIA GeForce 7900 GS 256MB DDR3 AGPSound Blaster Audigy LSSilverStone Decathlon 750W +12v@60A +5v@30AFS9 on WinXPPro (SP1)

Thanks very much :) ! Much better than what I had before - that required use of the command prompt.Jim Harnes

For FSX, search for "AffinityMask"