Dreamhost don't support any aisan language anymore

Dreamhost’s Apache don’t support folder&file named in any aisan language like japanese&Korea&Chinese anymore?When i us IE to visit a folder&file named in aisan language like japanese&Korea&Chinese in my web site,it always display HTTP 404 ERROR,how can i fix it?As i Konw,Dreamhost used to be support it by mod_encoding in php4 when php4 as an Apache Module,but now Dreamhost turn off the "php4 as an Apache Module"option, is that means Dreamhost don’t support folder named in japanese&chinese anymore?

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