WDsmartware building etilqs_ files in my windows temp folder - filling my drive!

I can get rid of one file at a time with the multistep procedure two posts above, whiich was OK when I was getting rid of 1 to 40 GB at a time.  However, I have about 100 small ones left, and it offends my sense of neatness.  I’d get rid of them with a DOS script, but when I use DEL  on them it says I’m not authorized to delete those files.  

Can WD post a DOS file or something simpler that would allow getting rid of them more easily.  Remember, when I look at this directory with Windows Explorer on  my Vista system these files just don’t show up.  Perhaps for version 1.6.x you could get the WD program to automatically delete any obsolete ones that it generated in the past.  Thuse