dark_lord69 :
I am using a stock cooler.
Overclocked to 3.6 GHz.
Temps are typically 31C - 33C.
How?
I'm using an Antec 300 with 3 120mm input fans and 1 120mm output fan (in the back) and a 140mm output fan (on top). The last 2 fans I mentioned are both near the CPU and help draw plenty of heat away from it. Also, I heat sync included with my 955 is the new design with heat pipes it works much better than the old design which i wouldn't even have considered keeping. But this one... I'm actually still deciding if I want to keep it. So far it seems to be doing quiet well. Another factor worth mentioning is the fact that I live in Minnesota and it's winter and that my computer is on the bottom floor which is tends to be quiet cool. I'm going to stress test the cpu soon and see if it can really maintane those low temps under high stress.
Where in Minnesota? I'm in the Rochester area. It is 70F today, next 2 days will be 76F. God that is hot...
Anyway, my temps range from 33C (idle) to 46C (load). Prime95 gets it up to 48C, but I'm not going to put 100% on 4 cores often at all. 46C is max temp when playing Bad Company 2 or Starcraft 2, running Photoshop CS4 in the background, music, firefox, etc. I did undervolt my 955BE to 1.184 for vCore, so that makes a big difference too. Ambient temperature is around 22C-23C.
Your temps are fine, just maximize the airflow in your case and take care of any cable management issues and you will be good to go.