And the temperature guide:
Core 2 Quad and Duo Temperature Guide http://www.tomshardware.com/forum/221745-29-core-quad-temperature-guide
Temperatures look high for and idle temp. Your cooler is sort of mediocre. It's a great economy cooler, but I wouldn't try to push a Q6600 past about 3.2 - 3.3 GHz.
And if the picture shows the default setup, you apparently got a chip with a relatively high VID.
OTOH, you should be able to reach 3.2 - 3.3 GHz.