Right... sorry for the delayed relpy.
Your CPU is a 2.8 Northwood HT with a stock Front side bus of 800Mhz.
Ive done some reading around and it seems that is a good chip to o/c with.
Here is my plan for you:
1) Read this:
http://www.geekstogo.com/forum/Unofficial_Overclocking_How_To-t11177.html
- It is imperitive to understand... before trying things out.
2) Lets start... Get into the Bios:
a) Find the FSB (sometimes called CPU host frequency)
b) This is what you will be upping. . . steadily.
c) Fin the FSB multiplier. (A single number
d) Now find your RAM ratios... (should understand now after reading above)
e) Find your CPU voltage.
f) dont change anything... but instead just post what you see on here. . .
g) if you are confused at anything in the bios get your manual out. If you are still confused try using a digital cam to take photos of the screen in bios and then posting them for us to see. (its a pain i know... but all Bios are different... and sometimes the generic names for certain things are not what youd expect. eg on my Gigabyte 965PDS4 board the ram ratios section is called RAM multiplier. . .
Just as an example of how i almost went wrong in a common/easy to make error:
Set RAm multiplier to 3 with FSB at 266 (stock as multiplier is at 9 and 266 x 9 = 2.4Ghz)
So Ram was now at the requested 800Mhz - Thats fine
Then thought... i know... i will start o/c the FSB. Of course... as i started pushing my FSB (even in v.small increments) my Ram was geting pushed higher too!... as the two things are connected.
However... i realised and brought the RAM setting back to "auto" (where RAM runs at 667... and then started to up the FSB again.
As i typed in the new FSB (eg 314) my RAM changed without me touching it to 785Mhz. - -
You see how upping the FSB drags up the RAM speed? - - -> Its tricky stuff.
This E6600 of mine will go up to 3.6Ghz and beyond... but im waiting till i get a sonic tower on it before i go any further. . .
Hope i can help more when you get the Bios readings.
Max