Unicode characters stored in session doing strange behaviour :(

We are storing user name in SESSION during login. When we are fetching it in another page, the unicode texts like Russion text converted to ?????.

Is there any setting need to do ? Using IIS 6

I have tried by adding below setting, but still it does not work :( <globalization requestEncoding="utf-8" responseEncoding="utf-8"/>

Any expert advice.