There is no such thing as a stupid question here as long as it pertains to using NewsBin. Newbies feel free to get help getting started or asking questions that may be obvious. Regular users are asked to be gentle.
Most other search engines supply "nzb" files. If you feed these NZB files into Newsbin, drag and dropping them or using NZB Autoload is the best way, Newsbin can download these files as long as they're still on the news server.