Question : CSV

I need to create a csv file, whith the filds separated by
comma ','.

Who do i set a field whith a coma in this format?
What is the MIME Type for this files?

thanks

Answer : CSV

>Who do i set a field whith a coma in this format?
normally char-fields are enclosed with a doublequote ->"

>What is the MIME Type for this files?
guessing text