Bold chars redirect to CSV

Is there any way to redirect characters in bold to .csv file using KSH. I need to open this csv in MS EXCEL.

thanks

What type of source file are you working with?

Am just creating a CSV file using shell script in UNIX. The same csv file will be opened in MS excel in Windows.
I need to bold few headers while creating CSV file in UNIX.

My understanding is that making a field bold is a cell formatting feature of Excel. I don't know of any way to create the flat file with bold or any other formatting enabled. This might be a question better asked of Excel experts.

Thanks. I am trying to create with cell formatting available in excel with some control chars.