My JSP file are using UTF-8 encoding, but the vss plugin cannot support it completely.

Committing, getting, and so on are fine, except comparing.
When comparing file which is UTF-8 encoded, the right panel of comparing dialog which show file in vss was wrong, and show wrong text for UTF-8 characters.
It's a old problem, even exists in latest version 1.6.2.

I'm using miscrosoft visual sourcesafe 2005 which has supported UTF-8 encoding, but this vss plugin seems hasn't add this new feature?

Please consider this problem, thanks in advance.