RAbd
*.asc is used by MODSOFT to store ASCII messages. Personally, I have never used ASCII messaging and my MODSOFT files never contained a .asc file. Hope this helps a little.
Brian.
Edit, I checked my MODSOFT files for *.asc and 3 out of about 30 MODSOFT programs had generated *.asc files. I don't know why or how because as far as I know none of our MODSOFT programs used ASCII messaging.