How to import a filelist.txt into an existing spread sheet w/ vba in Excel 2010

SO, I would like to import file names into an existing spreadsheet. I use CMD to generate the list, open the .txt file & set the delimiter, but it always overwrites my existing spreadsheet. Is there a way to code so that you can import the text w/ out overwriting the spreadsheet I need the data in? Any help is appreciated, thanks in advance. . .