Good and cheap motherboard for overclocking my E6420

Hi guys! First post here, and a newbie...

Guys I just want to ask, what is a good and cheap overclocking motherboard that can push my E6420@2.13GHz to 3.5 GHz up, that is, with a CPU Cooling and a high end DDR2 800~1200 RAM, is my PSU enough to deal with this? I have only 500W PSU, and my case is only a basic S99 Casing [LOL] , but never mind, please help me with this problem, I'm not too much of a gamer [Although I like playing COD4 ], but I run softwares like Pro Tools 7, Adobe Audition, SONAR 7, and Reason 4.0

SPECS

Intel Core 2 Duo E6420@2.13GHZ, stock cooling
no mobo yet
no ram yet
no videocard yet
Seagate 250GB Barracuda SATA
Powerlogic 500W PSU
LG Lightscribe DVD RAM 20X
Samsung WriteMaster 18x
Basic S99SB Casing

And also I want to buy a cheap video card but can run COD4, Mass Effect and Assassins Creed to all max, [I can't buy the ATI 4xxx and GeForce GTX 260/280, hahaha!!!, too much for the price!] Please can someone suggest, it would be a great help [my setup as above]

Can someone please suggest a good combination of mobo and ram and cooling for my setup [is a Zalman9700NT enough to make my cpu cool enough?] ??? Oh BTW, I will have dual OS, Vista Ultimate 64 bit and Windows XP SP2...thanks so much!!!

ati's 4670 is about $80 and is totally worth it....