|"I'm only using ddr2 667 ram right now"|
You should still be able to overclock slightly...it would be good practice.
"the cpu is at (6 x 200) and it wont let me change the multiplier or cpu frequencies"
Are you 100% sure about that? So your CPU is running at 1.2GHz instead of 2.33GHz? Are you 100% sure you have an E6550? Do you have CPUZ? If not, download, unzip & run it, then report back what's listed about your CPU: