Multiviews Problem (Apache Users)

I'm running into a bit of a problem when the client is IE7. IE7 seems to always be specifying the country code along with the language (e.g. always de-DE and never just de). IE 6 and Firefox don't always have the country code (e.g. can be set for en or en-us). If Apache is only configured to recognize de and not de-DE, as it is OOTB, then it doesn't recognize the language for requests specifying de-DE and provides another language. It's no problem to configure Apache to recognize de-DE, but then it will only recognize requests for de-DE not de-AT or any other variation. I would think that for anything requesting de* Apache should be serving de, unless otherwise configured. Is there any way to configure Apache to serve bar.html.de files for de* (e.g. de, de-DE, de-AT)? Thanks in advance.