this is the best way of frying everything you have.
deathmevirus knows nothing about ocing, don't consider him.
all can't be oced to 2.4, some more some less
read oc guides for x2
your mobo is not meant for ocing, get a new one first
ram:333
fsb:increase in increments of 5-10mhz and run super pi 1m test
htt*fsb:less than equal to 1000 at all times
cpu multiplier:10(default initially)
after you want to settle on a oc, run super pi 32m test
prime stress test 12-24hrs
memtest arounf 10hts
3d mark 06,01 especially
a few intensive games especially Oblivion
If all succeeds then you are fine
Also, if it doesn't boot, raise v core by the smallest possible increment
try not to go beyond 1.45, i don't know the max for stock cooling though, you are risking it
Keep temps in control, don't know for x2, but maybe 50-55 under full load of prime should be ok.
you are responsible for whatever you do, not me, and keep in mind ethically you void warranty unless you bring back everything to stock
if you really want to oc, change your motherbaord first
also, which power supply do you have?
any specific reason to oc?