Hi Jounie and welcome back!

first off, you might want to use the latest keyclone alpha (link ). i added preset layouts for the maximizer which make life very simple.

as for your machine, it should be fine to run four(4). i would set the maxfpsbk to between 10 and 20, and your maxfps to 30-50. (30 == standard def tv; 24 == movies; 60 == hidef)

you should also check out the cpu affinity. since wow is optimized for 2 cores, i would try to spread your wows around a bit.
ie:
wow1 0+1
wow2 1+2
wow3 2+0
wow4 1+2

if you have any questions, please feel free to drop me a note.

have a great day,

Rob