Special character insert into mssql

[eluser]rebornishard[/eluser]
[quote author="Juzt1s" date="1353074321"]I am using:
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';[/quote]
it's mssql right not mysql
mssql use utf16
so
$db['default']['char_set'] = 'utf16';
$db['default']['dbcollat'] = 'utf16_general_ci';

is that work ?