I changed the CPU FSB from 1.30V to 1.35V and ran prime95. Seems to be working went through 3 tests with out failing. My RAM is set at 800, it should be 1066, if i up it to 1066 am i going to have to change the voltages or anything?
If you want to stop overclocking, you're good--set it to 1066 and compare performance between 1066 and 800.
Otherwise, keep it at 800 and keep overclocking--since your FSB is at 400 and DDR2-800 runs at 400mhz, the 1:1 ratio between the memory clock and the FSB is the most stable. The memory speed has much less impact on the performance of your computer compared to the processor speed, so the first goal is to get the best performance from your processor, and then adjust the memory speed/timings accordingly.