Hello Elfmeister,
I wouldn't say there is a *best* way to do anything but rather what works best for you. All the lucky owners of a
Black-Edition chip get a fully unlocked CPU multi so that should be
exploited to the max although it is not the
be-all-and-end-all of the overclocking process . . .
gareth170 did quite a nice thread called "my phenom 965 c3 clocking" which you can find
here, that should give you a good idea of what the procedure is, he also linked up an interesting document written by AMD called:
UNLEASH THE DRAGON which outlines the the method of performance tuning an AMD® Phenom™ II system . . .
I'd say that once your certain your system is all nice and stable while at stock speeds and you have monitored temps and run a few benches and games your ready to begin . . . all you need to do is slowly but surely crank up the CPU multiplier and run a stability diagnostic, play some games, watch temps then rinse and repeat. As soon as the processor falls over and crashes your system then you just need to boost the vCore until it runs stable again, keeping an eye on temps etc . . .
At some point with this CPU Multi clocking you will hit a wall where the processor will not run stable no matter how much vCore you give it, this wall could be due to either temps running to high or the fact you have maxed the CPU. if you suspect its the temps you can trouble-shoot this by putting on some warm clothes and then opening all the windows and bring your temps right down and test again. Although this
freeze-ya-behind-off method is not a sensible long term option it serves a function by allowing you to know if you have hit some thermal-wall or not, the Deneb silicon becomes *enchanted* and can work magic if you cool it enough . . . If your stability problems go away once you and the system are frozen you at least know that you need better cooling!
Once you have worked out the max CPU MHz your ready for the next stage which is to test the CPU-NB where the IMC lives, again all the lucky owners of a Black-Edition get an unlocked multiplier so with the rest of the system at stock I believe you can just increase the CPU-NB multi and do some stability tests, once the CPU-NB (IMC) begins to strain you need to boost the voltage. The CPU-NB runs at default 2GHz but hopefully you will be able to get it running at 2.6GHz with extra juice . . . the same
freeze-ya-behind-off method can be employed if you begin to hit stability issues. I am using a slightly different core (Propus/Rana) to you and had some stability issue myself but these went away once I improved my cooling so bare that in mind, I think the IMC doesn't like the heat!
Once you have a rough idea of the CPU max and what volts its needs and the CPU-NB max and what volts that needs your ready to try overclocking them together, this may produce different results as the combined extra voltage from both the CPU/CPU-NB will undoubtedly push the temps up a lot more than when you just clocked them one at a time, so don't be surprised if you run into some problems that were not there when you tested them separately . . .
Everyone has their own personal method and pace to go about this but I personally like to take it nice and slow, the problem I have had is that the stability checks do not always show up a problem, Prime95 passed an 8-Hour blend, IBT passes many loops but the system may just reboot when you sitting there surfing? . . . the way I got around this was to just use the system for a day or two, play some games etc just to be really sure there isn't a little gremlin in the works . . . only once I'm sure the overclock is robust do I push on. Patience is the key thing here, give yourself plenty of time and don't rush things and you will be fine, by all means feel free to keep posting up your work in progress and ask any questions you need!
Eventually you will hit the max where no matter of extra voltage or freezing temps will net you extra MHz so your ready for the next stage . . . I notice you are using the same motherboard as me . . . although yours is with mismatched DDR2 . . .
For the sale of keeping things simple and I would suggest removing the 2x1GB of DDR2-800 and do your testing with just the 2x2GB of DDR2-1066. To get these sticks running at full speed your gonna need to set the HT ref. Clock to 267MHz while the sticks are set in the BIOS at DDR2-800 (which is default), of course by adjusting the HT ref. Clock your changing the base speed so all your other clocks will most likey need adjusting by lowering their individual multis. Bare in mind that by running the Memory at DDR2-1066 alongside an overclocked CPU-NB there will be more strain on the IMC so you may need to boost CPU-NB voltage to keep everything running stable . . .
Well didn't mean to go on so much there but that basically covers it, you got lots of things to overclock but you can do them one at a time, plenty of stability testing as you go and keep a note of what settings you are adjusting in case you forget . . .
Need to know anything more then just ask!
, I wonder what is holding you back? . . . You forgot to add your name to the screenie and half your screenie is bare desktop! 
