I have a 6000+ x2, am2, windsor. It runs 1.4V to get 3.0ghz, it came with a heatpipe cooler. I ran about 55C under load at stock speeds. I put even bigger arctic 64 cooler on it, while its much quieter, it still runs around 52-55C under load.
The windsor is a 90nm chip with 2mb cache, they do use 135 watts at 3.2ghz, 1.425V.
I doubt yours is binned good enough to reach 3.2ghz or 3.0ghz. If you have a non-heatpipe cooler then 2.6 at 1.3v is about max. If you have a heatpipe cooler make sure you put better paste than the oem stuff, that helped with my cpu.
I have another windsor cpu, in my living room system, using the old 6000+ cooler on it, its a 939 X2-4400+ windsor, It runs 2.2ghz stock, I have it running stable at 2.54Ghz/ 1.445v, about 57C under load. It did test ok at 2.7 just the fan was too loud. If you want to overclock you have to increase the voltage to 1.425v, that chip likes it current.
Be careful not to cook your p/s, they draw 135 watts when overclocked under full load. If you set the voltage to 1.425 and in the bios after rebooting it says in the bios you are getting only 1.36-1.38V you have a large VOLT-DROOP, you should not push the board over a 0.3 volt droop, some is acceptable, Don't go too much over that or you will cook the p/s or board's voltage regulators. Your overclock with that chip is basically limited by how much current you can feed it.
Make sure you stay under 60c under full load.
I would try 1.4v to start out, also drop your ht bus from 1000 to 800, drop your memory to 667 from 800, the mem and ht bus follows the fsb with am2.
increase the fsb speed untill it wont boot windows but still posts, then drop it by 10mhz fsb and test it out. Eg wont boot windows at 236fsb, drop it to 226 and test it.