If you want to use Greek or Turkish language character sets, follow the procedures presented in the sections below before you try to view one of these languages.
Before making any changes to Internet Mail Service, make sure that either C_1253.nls (Greek) or C_1254.nls (Turkish) is in your Windows NT\System32 directory and that the values shown in the following table are added to the registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\NLS\Codepage.
| Value | Codepage |
| 1250 : REG_SZ : c_1253.nls | Greek |
| 1251 : REG_SZ : c_1254.nls | Turkish |