Can't CF use non English characters in URLs ???? (critical for SEO)

Hi all,

I want to use non English characters (Greek characters) for folders of the URLs.

eg   http://www.mysite.com/Φάκελος/index.cfm

where "Φάκελος" is a non English word (Greek).

When the called page is simple HTML  eg   www.mysite.com/Φάκελος/index.HTM

it's displayed just fine.

When the called page is CF page  eg   www.mysite.com/Φάκελος/index.CFM

I get a "FILE NOT FOUND" error.

In the page where the link exists everything is UTF-8.

What's the problem ? Can't CF use non English characters in URLs ????

It's critical for SEO issues.

I use CF9.  Any ideas ???

Thanks in advance.

Anastassios