Mod page 2....
Setting it to 125 MHz
   Gently press the tip of the soldering iron on the ends of the pins until
you can free them from the board. Lift the pins SLOWLY with your
exacto knife or jeweler's screwdriver. Now take your wire and run your
3.3V lead. There are many places to solder this to, as the board has spots labeled
"+3.3V" with an arrow pointing to traces.  Now run your +3.3V to pin 116.
Find a good grounding spot (I used a screw) and run your negative  to pin 112.
Gently solder the two wires to the two pins. Carefully re-assemble and try it out.
Why not 187 MHz?
When I set mine at 3.0X, it would shut off after a few seconds and it would
reset the power supply for about 5 minutes. It didn't kill mine, but it may kill
yours ;-).
Dealing with the heat....
  Although it doesn't get too terribly hot, it can get pretty toasty after a few hours.
You can find your own creative way to take care of this, or leave it as is.
My N64
My N64 is a Jungle green model with the following mods:
1. Overclocked to 125 MHz
2. Removed plastic over expansion pak (gives it less     of a toy look)
3. Added heatsink from old stereo amplifier for            extra cooling
4. Blue LED ;)
The heatsink ;)
She's not for sale ;)
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