I'm a first time user, just downloaded 3.40 to try out.

I chose to download a friend's drupal-based CMS site. I selected the boxes "no
error pages" and "no external pages".

WinHTTrack stored all of www.myfriend.com very well, but it has also
downloaded quite a few (many MB) of www.otherguy.net pages, including .htm
pages.

I just want to be able to have www.myfriend.com available. What am I missing?
(I did a search for this and didn't find it.)