[Zope-DB] Vietnamese charater displayed not correctly!

[NGUYEN HUU DINH]

Hi,

I used mxodbc connected to MSSQL Server to get vietnamese data and displayed
it in portlets. But vietnamese characters displayed not correctly, question
mark appeared!!! I've set the encoding to utf-8 but I don't know why. Can
you help me.
See the website with error: http://demo.evn.com.vn
I used Zope 2.7.3 and Plone 2.0.4

Thanks

Dinhnh