How To RAR files in a specified folder in separate archives.. and then some :)

Hi!

I wonder, if anyone could help me with my problem.

I have a folder with ~100 files. Now I need to:
- archive every single one of these files in a separate archive,
- archive name equal to the file name except all dots ("."), spaces (" ") and dashes ("-") removed,
- password-protected and
- multi-parts á 400MB.

Structure is like this:

Folder
-File.Number.One.txt
-File.Number.Two.txt
-File.Number.Three.txt
-File.Number.Four.txt

And archives should look like this:

Folder
-filenumberone.part1.rar
-filenumberone.part2.rar
-filenumberone.part3.rar
-filenumberone.part4.rar

-filenumbertwo.part1.rar
-filenumbertwo.part2.rar
-filenumbertwo.part3.rar
-filenumbertwo.part4.rar
... and so on

Does anybody know a solution to my problem?

I tried using the command line tool but I failed when it comes to renaming and compressing separately :(

Thx in advance :)

EDIT: OS is Windows