[Stingray]

I’m a newbie so don’t really know much about how WM5 phones work.
I have a Sprint 6700 and as I understand it, it has:

RAM: 64 MB
ROM: 128 MB

I believe the RAM is used by the OS for processing of the Apps temporarily.
ROM on the other hand is divided into 3 parts:
1. Part 1 is locked and is used for preloaded Sprint software.
2. Part 2 is labeled as “Storage memory” and I can install programs there.
3. Part 3 is labeled as “Program Memory”. What does this part do? I have seen it fluctuating in size along with my usage of the phone. To me it seems like it is doing what the RAM is supposed to do.

As you can see, I am totally confused and I would appreciate it very much if some kind soul would please explain to me how this thing really works. Again, I might have got this ALL wrong.