Chinese languages

Hi there...
Well, as you've already got, I'm beginner at Chinese
Language's Typing Area (Realm ) .
So, I need a help... with typing.
Let me again explain, how I understand it all.
There in Chinese are characters. So, but that step
by, we have one 'if': There are 102 keys on the
keyboard only.
As deep as I know Chinese grammar, I can say that
there is 'zhuanzhu' system, which divides Chinese
characters into 6 groups.

1. Pictures
It's mere pictures of the things.
2. Symbols
It's special auxialary characters which give
grammar-additions to text.
3. Sound-Loans
are different characters with the same
pronunciation.
4. Sound-Meaning Compounds
are characters-A with other characters-B which
anyway sound at the same way as they are alone
(alone without characters-B)
5. Mean-Meaning Compounds
Mere pictures which with other pictures combine
new character and meaning.
6. Re-Clarified Compounds
Useful additions which show old meanings of
already changed characters with new up-to-date
meanings.

At first appearance, it seems difficult, but if
to ignore pronunciation, then we have 3 aspects
only.
1. Mere pictures. (not radicals)
2. The Radicals.
3. The characters which can be represented with
other characters in the group only.
Sorry for so long greeny explainations, but
HOW DOES IT REFLECT ON TYPING OF CHINESE CHARACTERS?
I use Microsoft Office XP Chinese IME-System.
There are both chinese languages able to use:
CHINESE (TAIWAN)
CHINESE (PRC)
So, anybody can explain how can I type the
characters in?
I mean, I can typing, but I want to know how to type
such character which I need next to.
Which system is used there?
Are there the radicals used as the ABC?
How can I know, which character's going to add itself
to the first one, to combine the new one?
Probably there is stroke-system in use.
Who knows?
Thanks before for help.
Thank you for attention.
Cheers,

Andrew.