I've been following the instructions here
to get the old version of Wordpad working, however I have run into a problem. I downloaded the old version of Wordpad provided in the second link, since I don't have Vista, but when I try to overwrite the existing version on my computer, it won't let me give it the permission necessary to do so. It passes one permission check, but then says I need permission from "TrustedInstaller" to change it, which no amount of clicking "Try Again" will solve.
Is there something I need to be doing that I'm not? Or is there some other problem that I'm encountering? Any help would be very much appreciated, thanks.