CPU Overclocking q?

[c61ll]

Building a new system very soon and just need a little advice on clocking my cpu.

Going to be using a core 2 6850 with pc 6400 crucial ballistix memory on a asus p5k delux mboard.

My questions are, do i need to overclock my cpu to mach the 800mhz memory?

If so,
1. how much by?
2. how do i do it?
3. will i need an uprated cpu cooler, which 1 for around £30-£35?
4. will it be stable?
5. what speed will my cpu be running at?

Sorry for all the qustions.

 

[c61ll]

Thanks for the info, if i were to chage to one of the mentioned boards, which is the better of the two and i would also loose my wifi what wireless/wifi card would i need to connect to my netgear router

 

[c61ll]

Any views on the Tuniq Tower 120 or Thermaltake BigTyp 120 VX CPU Cooler?

 

[c61ll]

I have been given a linksys wireless-g pci adapter model wmp54g, would this be ok to use in my system?