ZIP+4 ZIP codes in Contacts for Samsung Vibrant (Galaxy S)
It seems that entering ZIP Codes directly in the Contacts app in the ZIP+4 format under Android 2.1-update1 is not possible. However, I just updated to Froyo (2.2) (T959UVKA6).  Not only can the Contacts/ Storage app natively import and export contacts to and from the microSD card, but it also allows directly entering ZIP+4 with the dash in the ZIP Code field!