imagecfg -a 0x2 0x3 "C:\Program Files\Folding@Home Windows SMP Client V1.01\fah.exe"
imagecfg -a 0x2 0x3 "C:\Program Files\Folding@Home Windows SMP Client V1.01\FahCore_a1.exe"
For quad core processors, first SMP client is assigned to 1st and 3rd core, 2nd SMP client assigned to 2nd and 4th core. Assigning affinities on QUAD if you run one SMP client does not make sense.