Say that you're perfectly willing to use new tools for new sites, but that fixing sites made with old tools requires those old tools.
I assume that fixing that old site is part of your job.
My boses are giving me a hard time because I prefer working in coding view (in Dreamweaver) rather than live view because they've been told "it isn't necessary to code anymore." I'm cleaning up an old website with numerous coding errors on just about every page. I prefer the precision of working with the code. Any arguments you can give me to use would be most appreciated!