Nero Express 5.5

I just burned some folders and files from my c drive onto a cd-rw with nero express 5.5. Now one of the word doc.files on the c drive needs to be overidden each day because I edit the file with new data. This particular file is inside one of the folders. Since I already burned this folder with the word doc.file inside of it onto the cd-rw how do I over ride it with the new data? I was able to do my first burn with no problem but I don’t understand how to over ride a file when it is already on the cd-rw.