vb net how to define title tag with a variable

Hi,
I'm trying to define the title tag of the page with a variable. With classic asp I used to define title alongside when setting up the meta tags dynamically but in .net the tag is entered automatically (empty) and thus I get an error when validating because the title is defined twice or in the head tag. (Element title not allowed as child of element head in this context. (Suppressing further errors from this subtree.))
How can I set the title dynamically depending on language of page (German, English,...)
Thanks for the help.
Pascal