>My app is written and compiled in standard British Windows. When used in Greece using Greek Windows/Fonts Etc, it works fine with Greek characters until existing data, in ascii text file is appended to a table (APPEND SDF). Then the characters that use standard ascii are ok, but those from the extended set are wrong. I have tried changing code pages of tables etc, but all to no avail. Can anyone help?

Try

APPEND SDF FROM ... AS <Greek codepage>