I found that under 'FileOpenAssociations' key the html is directed to winebrowser. And when I actually issue a command like: Code: wine winebrowser http://www.google.com I see that it pops up in Firefox, which is what I wanted. I also see a 'MSHTML' key which directs to gecko. I guess the program must try to open a mshtml page instead, which then now opens in a gecko IE window. My question is why back in the prior version of Wine it was not like this? Or can I simply change the 'MSHTML' key to direct it to winebrowser? I don't dare to change before someone's confirmation.