Currently Being ModeratedNov 15, 2012 10:08 AM (in response to Nicktrents)
I have never worked with the language settings but I notice there are a bunch of them in the International panel of System Preferences. I don't want to change mine to test but it looks like they apply system wide.
Currently Being ModeratedNov 15, 2012 10:27 AM (in response to Nicktrents)
In order to re-install OS X 10.6 you will need to do an erase and install if the Mac is running a later OS as you can't install an earlier OS over a later OS (as you've discovered).
All your data will be deleted so you will need to have a reliable back-up (Time Machine or a clone) in order to be able to restore your important data.
If you are happy with Mountain Lion you can go to System Preferences>Language & Text and drag English to the top of the list and restart. It should now be in English.
Currently Being ModeratedNov 15, 2012 10:45 AM (in response to Nicktrents)
I have tried this already
What have you tried already? OS X is multilingual and changing the language normally takes a few seconds. You go to system preferences/language & text/language and move English to the top of the list and then logout/login. No reinstall should be necessary.