I'm 5-boxing, using a Q6600 (quad core)
In Keyclone, you have the option to assign a core (0-3) to an instance of Warcraft.

Is the game faster is windows (Vista 64-Bit) manages my processors, or would I benefit from assigning each CPU to an instance of Warcraft?
If it is better to assign each instance a CPU affinity, which core (0, 1, 2, or 3) should have the 5th instance of wow?