when I use URL list files having a lot of .htm files, when the program runs I
get all the files saved as .html files. how to control this so that htm files
are saved as htm files.

Again I noticed that some numbers are padded to swf file names, is there a way
to control this?
and I have one situation that I debugged a downloaded page that was not
working properly and found that one key was changed from xxxx.swf to xxxx.html
(inside the htm file)