[aleyda]

hi,
my english is not so good, but i hope you can understand my problem.

i have a file like ***.prc. this file i would like to convert with calibre (i think it should go with this program). but when i start calibre to look what is in the file, i get an error message:
unknown book type 'APPLSMMM'

could someone tell me what to do in order to get the file readable?

thx
aleyda