> I'm having problems downloading sites on archive.org.

archive.org sites can not be properly downloaded, because 
the archive site includes javascript code that 
automatically (during onLoad) patches all links embedded in 
the pages.

The only solution is to use the Linux/Unix version, and 
some callbacks using the given example:
src/libtest/callbacks-example-baselinks.c

This plugin will allow you to discard the archive.org's 
BASE HREF's tags and ensure that the links are properly 
formatted.

See my previous post here:
<http://forum.httrack.com/readmsg/7940/index.html?pid=7938&days=10000&js=1&lang=en>

.. but this is not an obvious stuff to do.