help me overclock my system

i have a pentium D 2.8 ghz with a intel 945 GNT mother board ,how do i overclock it,it shows no options relating overclocking in cmos setup,i'll really appreciate it

Is this a new board, or is this part of an existing commercial install. You won't be able to overclock an 945 GNT by much, if at all.

well it is a new board just bought it almost three weeks ago,so how do i overclock it.and i dont want to overclock it much,lets just say i'm new to overclocking just learning .

But my asus manual explains how.
Read yours to see if it's got overclocking ability.
:grinthumb

well my mother board came in a xray film type plastic bag with 2 cd's but no manual