I would recommend the following to your 3.2 G goal :
G P35 Ds3 L
any compatible 800 mhz ddr 2 ram ( i am using corsair ; i am loving it)
A good cooler.
3.2 G is easy to achieve. You may want to go beyond that, but, in my case, i stop at 3.2.
The performance gain between 3.2 and 3.6 or 3.8 is not a lot compared to the voltage you are putting in. You save like 2 s from 3.2 to 3.6 G, but you are using so much juice to make that 2 S happen. At that point- 3.6 or above, you are stressing too much on the whole system. To me, it does not make sense and it is not worth it. But, it is just me. It is your call.
Best bang for the buck:
Mobo - Gigabyte DS3L/Abit IP35-e/Asus p5k se
CPU HSF - Xigmatek s1283 easily!!!
Memory - CAS4 DDR2 800mHz Crucial/Corsair/Patriot/G.Skill any will do for what you want to do. At a FSB of 400mHz (800mHz for the DDR2) you'll be at: 9x400mHz = 3.6 gHz, so the 800mHz DDR2 will be plenty for your desires.
PSU - Make sure you have a quality PSU and don't skimp on it. I'd rather skimp or buy something cheaper than skimp on the PSU, especially if your going to OC! I'd recommend the Corsair vx550w PSU/Antec 500w Earthwatts or better if your looking for a new setup.
Everyone seems to like their P35 Intel based boards. If you want to OC I wouldn't do the 680i that I have. Had it stable at 3.3Ghz for two days, now it won't OC at all and stay stable.
As far as memory goes, I really like Corsair's XMS stuff. Always had good luck with Corsair memory.
My eVGA 680i board also did not like quads. Best I could do was 3.0 GHz with a Q6600 - and this with a board that would reach 3.6GHz with an E6600. The Q6600? That's in a Gigabyte EP35-DS3P running at 3.6 GHz.