1. Export Thunderbird Address Book to LDIF (Address Book > Tools > Export...)
2. Import LDIF into Windows Contacts:
   1. Start > username > Contacts
   2. click Import button on taskbar (if it's missing, try this)
   3. LDIF (LDAP server) > Import
3. Import Windows Contacts into Outlook 2010:
   1. Outlook > File > Open > Import
   2. Import Internet Mail and Addresses
   3. Outlook Express 4.x, 5.x, 6.x or Windows Mail
   4. check "Import Address book"
   5. Next > Finish

/windows | Jan 24, 2012