got a 2.4C and its at 3.4C running perfectly stable.
have the same mobo. OCing isnt hard...just lock your AGP/PCI, set DRAM frequency to 400 (1:1 ratio), then crank up FSB slowly...
but to get above 3Ghz, you have to set the DRAM frequency to 333Mhz (5:4 ratio), which sets a memory divider. from what i hear, the mhz increase offsets the memory performance loss. but, i have mine at 283FSB at 5:4. for everyday computing, i usually go with 3.0C on 1:1, or for heavy gaming/LAN parties, i go with 3.4C (283FSB 5:4).
also, make sure you are comfortable with your CPU temps, as they WILL go up quite a bit. mine idles around 45. goes up to 52C when overclocked at 3.4C.
hope that helps!