How to change icons/folder/etc ??

[kyutip]

Hi everyone,
I just found some cool icons, cursor, etc.
unfortunately I only know how to change regular shortcut icons.
what I want to know is how to:

1. change drives icons ? (floppy, cdrom, HD)
2. change folders icons ? (instead of regular yellow one)
3. change the vertical blue Windows98 bar on the start menu ?

is there a site that teaches all this ??
please help

thanks