These settings worked for me on a BIOSTAR G41-M7 with a CoolerMaster and 2GB of 667 DDR2 RAM, as you can see I work at 3.00GHz without any issues, the temperatures are below 60ºC for the micro and below 40ºC for the board
FSB 333
multiplier x9
Vcore 1.3 (default)
VFSB (+0.1V above default)
VDRAM 1.9 V (+0.1V above default)