CSV File format: ISO-8859-1 Charset ?

I am looking for information regarding how to save a file from Excel w/ these paramters:
CSV with the ISO-8859-1 Charset

Here is what my web developer wrote me-
Since you have some fancy quotes and other characters
in your descriptions, you need to save you CSV file that you export
from excel in the ISO-8859-1 Charset

When saving my file to the CSV file format, never have I seen this option before, nor can I locate it now.

Any info on this?

Thanks,

Doug