Overclocking core2quad?

plz help me.im absolute newbie in overclocking.my hardware:-

Windows 7 64 bit,
C2Q Q8200 2.33Ghz (333X7)
MSI P45 Diamond,
4GB ddr3 1333mhz.

i got read a few article just nw but getting more konfius.

a) i have prob with FSB/DRAM ratio. my mobo ratio option is like 1:2.00,1:1.50 etc etc.why is there an extra point smth smtg???

b) whats is my max FSB then?? 1333/2=667 for a ddr3?? so my CPU FSB shud not exceed 667 rite??

c) There is an option for PCI Frequency. should i set it auto?? my mobo dont have PCIe Frequency option but i read sumwhre this must be adjusted as well?

d) when i overclock my cpu, should i overclock my RAM also?

Earlier on i up the CPU frequency to 2.49Ghz with 6 CPU ratio and end up having my an error saying theres an error and windows will shut down in one minute.i bekome sked dy. then i up the voltage a bit and the whole PC cant boot.LOL.no idea why but i think i hav wrong FSB/DRAM ratio setting.anyway FSB/DRAM ration is for what?

hope anyone can ans my Q as briefly as possib.thx thx