Yes, you can overclock your current Phenom II by raising the HT reference clock. The HT Ref Clock by default is set to 200 Mhz. The multiplier for your CPU is 13x. If you were to bump your HT Ref Clock to 233, the processor will run at 3 Ghz. This will mean, of course, that you will have to OC your memory as well, since it's speed is also controlled by the HT Ref Clock. DDR2 actually has some decent overhead that you may not have to bump the voltage any.
The good news is that the Zosma (960T) should run fine on your mainboard. Make sure you have the most recent BIOS update available. The Zosma multiplier is unlocked, so any overclocking should be a matter of turning up the multiplier and testing for stability.