> When I run a command to download an xml file, I'm
> using the -N command to gibe the file a new name. 
> Everything works great.  When I run the 2nd command
> to download another xml file, even though the file
> name is different, the original file gets wiped
> out.


Download the files at once, or use separate directories - there is no way you
can download multiple httrack sessions in one directory.