Advice on overclocking

I have an 2.8ghz e7400,a gtx275 and a 1920x1080 monitor. Will I get any decent perfomance increase by overclocking? Also, is it safe to overclock using a stock cooler and how high should I overclock it? My cpu is 40c at idle. I have never overclocked before so any tips or software to make this easier would be appreciated.

Then listen to this tip. If you've never OCed before, stop and do some reading. No, do lots of reading. You will want to know exactly what to do before you start doing it. Its a bit more involved then just picking a number you want and setting the switches. (or values in the bios for you newbies.) I would start with reading the stickies in this forum and searching "e7400 overclock" online. Post back in this thread anything you don't understand so we can clarify. Once you understand what your doing, then you can overclock your CPU.

THat would go along with research

HOWTO: Overclock C2Q (Quads) and C2D (Duals) - Guide v1.6.1
http://www.tomshardware.com/forum/ [...] uals-guide

Core 2 Quad and Duo Temperature Guide (need to know something about thermal management)
http://www.tomshardware.com/forum/ [...] ture-guide

The heatsinks that come with the 45 nm Intel CPU's are half the size of the ones that came with 65 nm CPU's. That means that they are just good enough so that the CPU chips will run at their rated speed. If you are going to overclock, you will need better cooling.

Suggestions on coolers:
http://www.frostytech.com/top5heatsinks.cfm

How to apply thermal paste:
http://benchmarkreviews.com/index. [...] mitstart=5
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Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz