I tried to check this out but it seems like there is confusion in my search engine (google and ask) as to infranview and irfanview. Anyway, irfanview listed many formats it will change but .hrf is not on their list. Thank you for the suggestion. It took me to many places I haven't been before. (which is fun and sometimes good) We may wind up re-scanning them.
Again, thank you
bm