Divider Help+

I have always used a Athlon cpu like many people and are currently upgrading to Intel Duo which i will be overclocking
However i am a bit confused about DDR2 memory and the divider settings. I really can get my head round it and i would like to undertand it more.
Anybody now any good guides to explain it more.
ie is it best to run 1:1 with good memory etc etc?? and what doe s 1:1 mean?????

a 1:1 divider means that your ram speed equals your fsb, aka 1 to 1 ratio. and its not exactly best to run at that ratio, its good to run slightly lower then the maximum OC of the ram (just like cpus and vid cards.) sometimes that means a lower divider.