JSI Tip 0502 - The Dialing Properties Country dropdown list is incomplete.

If a new (since NT 4.0) country code needs to be added, edit:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Currentversion\Telephony\Country List

From the Edit menu, Add Key and set it to the Telephone Country Code. Leave Class blank. Select this new key and Add Value for the following:

Value Name	Type	D a t a
CountryCode	REG_DWORD	CountryCode (in decimal). Same as the new Key.
Name	REG_SZ	Country Name
SameAreaRule	REG_SZ	provided by telephone provider
LongDistanceRule	REG_SZ	provided by telephone provider
InternationalRule	REG_SZ	provided by telephone provider

Reboot your computer for the new country to appear in the Country Code list.