Can't remove red lines, thinks English is misspelled. Was German.

[Guest]

Help, I'm editing slides that were German to English. I need to get rid of
the red lines, it thinks the English is spelled wrong. I've set my defaut
language to English.

 

[Echo S]

Help, I'm editing slides that were German to English. I need to get rid of
the red lines, it thinks the English is spelled wrong. I've set my defaut
language to English.

You'll probably have to change the language ID of the textboxes.
http://support.microsoft.com/default.aspx?scid=kb;en-us;245468 should help.