Seeing that u have oced your c2d successfully. I just need few pointers.
First thing first. I just Bought below spec.

E6300 + Stock HSF
Corsair VS 667 512 MB (1 stick only - next mth wil buy another one)
Gigabyte DS3
Sata1 160GB
X550 (next mth will upgrade...maybe)

Let's just assume I have ZERO knowledge to OC as the last time I tried to OC was the P43.0E only using a software called aibooster by Asus. and I hear people say that piece of software is bull...

I can navigate my way via Bios but was too scared to play around with it without a Guru guiding me.

Here is my aim. I'd like to just OC to maybe around 2.5 ghz only when I'm encoding video for my PSP and anime (DVD-AVI/MKV), so it's not 24/7 OCing.

Just interested to OC without upping the voltage and only while im encoding movies/anime.

I saw people use a software that was bundled with the DS3 board but was not sure whether that is a good choice to 'easily' oc.

Your experienced advise is much appreciated. and a step by step guid would be great too....

I'm sure you received a lot of post like this and I understand if you guys just point me to a thread for me to read first. In fact I have done a fair bit of searching and most of the guide assumed that the user knows sumthing on OCing and some of the new guide seems too outdated compared to today c2d boards.

Thanking you guys in advance for your help.