Is there a way to balance or adjust the load between cores(2 or 4) on my cpu's through XP(50%-50% instead of 100%-30%)?1 person needs an answerI do too

You could try setting the affinity on processes to affect this, but you are probably best off letting the OS handle it. Newer OSs can park unused cores to conserve power; depending on your system/usage, this may or may not be attractive. It would appear to go against what you're trying to do...