First off, rather than posting a list of processes, why not just type them into Google and see what pops up? The first couple of links should give you an idea what the process is and does. Then you can make a determination whether or not you want it running.
Second, comparing two completely different computer architectures for performance is never a good idea. The PowerPC chip is basically an enterprise level chip being used for consumer level applications. Also, I'm guessing you have an early generation Pentium4, in which case the very design of the CPU will work against you. Intel designed the P4 for high clock speeds NOT high performance. The two are not nearly as related as most people think, which is exactly what Intel was counting on.
Im using Win XP probably with SP2
I currently have the following processes in alphabetical order:
System Idle Process
Total processes: 43
Is this why my computer is so slow*? What can I do about it
I have 1.69gHZ and my old mac os 8.6 has 800mHZ however the mac seems up to 2 times faster sometimes.