I've updated the package for wine these days to version 1.9.10
You may find the wine package for your favored OS if you search the repositories here: http://sfe.opencsw.org/quickrepolinks
Something to test would be if directx works. If you have success or a failure and can help to debug this, that would be great.
Try it. You'll be surprised how fast firefox runs inside wine!
To start, run the script "winetricks" and install firefox from the application submenu.