And lastly, BUS speed. I know that increasing bus speed esentially overclocks everything. But How exactly do I adjust this guy? Or is it better to do everything else separately?
When I did my overclock, I was able to get it a bit higher when I used the reference clock instead of the multiplier. Not sure why. But I know a lot of people use the multiplier instead of the reference clock, and a lot of people use a combination of both. I suppose it's just a matter of which method you have the most success with.
Anywho, one thing to remember is that the reference clock effects everything, so as you turn it up your RAM, Northbridge and HT link will be effected too, so just make sure you put that stuff back down a bit so you're only overclocking one thing at a time. That makes it easier to figure out what has gone wrong when you eventually hit a wall.
Probably worth looking around the forum for some of the information on NB overclocking. I've read that is has a pretty big effect on performance - haven't noticed it myself, but I don't really do any benchmarking or anything.