I didn't think he would have it go all the way up to 3200+. I assumed he ment he just wanted to run the bus speed at 200mhz.
alright the 3200+ is realy only 2250mhz
the 2100+ is 1750mhz
To go from the 2100+ spec to a 3200+ is a 28% overclock, not a 50% overclock. With proper cooling you can expect good 2100+ to run at 2600+ spec if not a bit better if you are lucky.
A 2600+ is realy 2080mhz
So that is a 18.8 percent overclock.
Once you unlock the 2100+ you can get control of 5X to 12.5X clock steppings.
So lets say you want to aim for 200mhz bus speed. Your nforce2 can run stable at 200mhz if it a second revision, if it is original "revision" then it MAY run well at 200mhz. We will asume it can.
SO....
You can try
11X 200 which will get you 2200mhz or around 2800-3000+ spec
or
10.5x200 which will get you a 2100mhz or close to a 2700+
or
10x200 which can sack you 2000mhz, close to imbetween 2200+ and 2400+
Of course depending on your hardware you may not even be able to overclock it at all.
But if you want to know if a 2100+ will run a 200mhz bus. Then yes it will, probably.
But if you want to know if a 2100+ will run about 3200+ spec. Then maybe.. If you used advanced cooling technics and careful voltage control, refrigerated water or a super-duper cooling tower and was able to hand select a 2100+ you could probably run it past 3200+ specs if you REALY wanted too. A 28% overclock is not unheard of.
Now would that be cost effective? no.
Will you burn your proccessor and possibly your motherboard out? possibly.
Will it equal the actual performance of a 3200+ proccessor? no
Would I do it? no
Is it possible? sure if you are lucky.
Is it a good idea? no I don't think so. Might as well buy a real 3200+ in another month or so. It would probably be cheaper, considuring of course if your memory is already ddr400 spec, which I doubt...