The address book in new email is your autocomplete history. There is an .NK2 file on your old computer that has the information you want. It is located in C:\Documents and Settings\[Username]\Application Data\Microsoft\Outlook.
Copy the file to a thumb drive and paste it in your new computer. The path for Windows 7 is C:\Users\[Username]\AppData\Roaming\Microsoft\Outlook.
For your editing features like the ruler, you need to reconfigure Outlook to use MS word as the default editor. Go to Tools -> Options. In the Mail Format tab, check Use Microsoft Office Word 2003 to edit e-mail messages.