I think I accidentally hit some sequence on my keyboard which only affects it when typing in Greek. In Greek, it now types characters--mostly vowels, I think--with accent marks instead of the normal Pi behind the P key, Rho behind the R key, et cetera through the Greek alphabet. In English, it types normally.
I'd sure like to get my keyboard back to typing predictable Greek letters. I was going to give examples in this post of what it actually does, but Ι can't reproduce it here, nor in a Word document outside BibleWorks. It's only doing it inside BW. When I type lowercase 'p' (or lowercase Greek rho) I get a Greek lowercase omicron but with a circumflex. When I type English lowercase 'i' (or lowercase Greek iota), I get an accented epsilon.