By default, PowerDesigner generates in the HTML page a character set (charset) built from the current language of the report. If this is not correct for your needs, you can change the charset.
For information about working with charsets and coding pages, see: http://www.w3.org/International/tutorials/tutorial-char-enc/.
You can translate the navigation buttons (Previous, Next, Home) generated by default in your HTML report using HtmlNext, HtmlPrevious and HtmlHome items in the Report Titles\Common Objects category of the Report Language Editor. For more information, see the "Translating Reports with Report Language Resource Files" chapter in the Customizing and Extending PowerDesigner manual.