This seems a do-it-yourself question. But it might help if you explain in some next post what exactly you mean with 'text files' and why you are so eager to delete them. And also post your OS (what version of Windows).
The two do-it-yourself approaches are:
1. Delete files as you always do. Shutdown and stay off the machine overnight. First thing next morning, open Word, insert disk 1 and after clicking OK on "agree" exit Word. Then go into Windows Explorer and find all files modified today. It must be a rather small list. Post it here for advice (full filename including folder).
2. Note all the files you want to delete, but don't delete them yet. Delete the first and open Word to see what happens. If nothing special, close Word. Then delete the second one. And so on, and so on, until you find one that causes the problem. Restore that from the recycle bin, note it's full filename and continue until you deleted all files. Post the list of suspected files for advice.
I think you can concentrate on Program Files (warning: never delete anything from Program Files, unless you know what you're doing), Windows (warning: never delete anything from Windows, except from the temp-folder, and Temporary Internet files from IE) and My Documents and Settings.
Waiting to hear from you with the results of either #1 or #2 (or maybe both).
I've got Office Suite 2002, and it seems that every time I purge my system of seemingly unnecessary text files, I happen to get rid of at least one that consequently causes an annoying problem for me.
After my purge, whenever I try to use one of my Suite programs (usually Word), an installation window pops up and asks me to insert Disk 1. After doing so, the program opens, but with the legal agreement window open as well. I press "agree" on that, and off I go to work.
I'm assuming it's a certain text file (or files) that I've been deleting that's causing this. Can anybody point out to me which files these are so I can mark them as hidden to avoid deleting them during future purges?