Remove Foreign Characters From CSV Sheet

Hello I need help!

Hello all... I have a long list of names and email addresses from all over the world. I need help removing all of the non English charterers, or changing them to UTF-8 or something. I am trying to import the list into Infusionsoft and cannot because it contains strange characters so needs to be cleaned up. Please help! I have spent so much time trying to figure this out with no luck. THANK YOU!

Please send detailed instructions as I am fairly new to visual editor and macros and functions, etc.

Thanks!!

Example of what I am seeing: ирина or татьяна or Mar�*a