>Can be possibel inable to uni codes in win98 like windowxp. So, write other language other than english.

See

- http://support.microsoft.com/default.aspx?scid=kb;EN-US;210341
- http://msdn.microsoft.com/library/default.asp?url=/library/en-us/mslu/winprog/microsoft_layer_for_unicode_on_windows_95_98_me_systems.asp