no answer to that question

i did not received any message to that question...

and the question is with the translation of a button text in the page of product details, wich is "ask a question about the product"

Sorry, from your message I though you solved it. "ask a question about the product" is text that's located in VM's language file /administrator/components/com_virtuemart/languages/shop/english

So, I believe you should install additional language for VM. Again, for further help regarding VM and its extensions, language files, etc., please visit www.virtuemart.net