Hi marwick3,
I saw your post about t your Northstar Explorer 457 that you are having issues with the Language on it is that correct?
If is may ask, was the language changed or did you get your Northstart Explorer in a different Language?
On you Northstar Explorer press the MENU button twice then select SYSTEM, you should see Languageo n the List from there-on you can select the Language that you want your Northstart to be using.
If it is set to a different Language then press MENU twice once you see the list the first on top is Language to the right is the language selected from there you can press ENTER to select the Language option then the arrow keys to select which language to choose once you are set to choose the language you wish then press ENTER once again to select the option.
this should help you get your Northstar back to the Language you want.
For further details regarding your Northstar you can go to the link posted below for further details.
http://www.northstarnav.com/upload/Northstar/Documents/EXPLORER_457_467.pdf
I hope that this helps.
Thank you for choosing Fixya,
mvincentc