allright, i think i have decided on a design.
i like both the #rotor designs and the sprial design, so i am going to sort of combine both of them. the center of the cpu block is made using the #rotor method, and the rest is a spiral made with a drill press. i will dremel down the corners after drilling the holes. these are kind of rough picturs...
these will probably be made using 2" x 1.5" copper bars
the gpu block is attached to my gf4 4200 using the 4 little holes next to the chip, not the ones that the stock heat sink is mounted on (is this a good idea?)
CPU 2"x3.5"

GPU 1.5"x1.5"
any thoughts? i put up a post in the general watercooling forum about the rest of the setup
here
thanks