Kovids advice covers moving the calibre library.
If you want to copy your user preferences a well these are normally stored in the folder
Code:
C:\Users\username\AppData\Roaming\calibre
on Windows 7 where 'username' is the username you log in under. This folder may be hidden by default so that you have to switch on the 'show hidden files'option in Windows Explorer to see it. Copy the folder and its contents.