I used NJStar Communicator 2.0-3 on Windows 9x/ME and created some CJK file names, now I upgraded to 2.5 but can not read those file names.

When used on WIndows 9x/ME, NJStar Communicator 2.0 to 2.30 created file name in double bytes, this is not standard and can only be viewed using v2.0-3. In order to make CJK file name to standard Unicode, v2.5 has changed to created file name in Unicode, so the file can be opened in other windows. Here are how you can convert a double byte file name to Unicode: 

• switch nj viwer to ANSI/No CJK
• copy the double byte (GB for example) file name
• using NJStar Universal code convertor to convert GB to Unicode UCS2
• switch nj viwer to Chinese GB
• edit the file name by pasting the Unicode
• now the file name is in Unicode, and can be viewed in NJCOM 2.5 or other windows like (Chinese) Windows XP.