10 Common Mail Merge Problems in Microsoft Word 3.8.2018 · I am using Word XP/2002. I am doing my first mail merge. I want to do a letter with the address varying. All addresses have three lines. They were put into a CSV file by exporting from Excel. I am going through the mail merge wizard. I started with my prewritten letter open. I selected the CSV file. All rows appeared pre-checked. I went to the ...