Well, since I feel like being helpful, here it goes:
I'm assuming you dont want to overclock your ram (since that always complicates things, heh).
Since I'm not familiar with the bios on your motherboard, I'm going to give you the settings I WOULD use, it's up to you to find them and set them. One thing, though, you should be familiar with how to clear your cmos before you start messing around with the bios settings.
Off the top of my head
Set your HTT frecuency (CPU clock) at 240MHz (from the original 200)
Lower your Hypertransport multiplier to 4x/800MHz from the original 5x/1000MHz
Go into your DRAM settings
In ram speed select 333 (from the original 400), this is a 5:6 DRAM:HTT ratio.
This will give you a 2640MHz CPU frecuency and leave your ram at 199MHz (DDR398).
If your cpu does not work at the above settings use the same settings and set your CPU frequency/Multiplier to 10/2000MHz from the original 11/2200MHz. This would lead to 2400MHz cpu frequency, which is the 200MHz speed bump you asked for to begin with, I'd try the one above first though, since there are some really good san diegos that can do 240x11 at stock volts.
As with all overclocks, you should test for stability:
I'd leave the computer in prime95's torture test for a day or so, just to be sure. If after you overclock you start experiencing crashes/restarts then your system IS NOT STABLE, a bit of voltage would most likely help but since you didnt want to deal with that then you can just scale back on the overclock.
