> I want to emulate the IE 'Save as...' behaviour, 
> too (saving the html-content and all associated 
> images etc)...

For a single page, the following filter:
-* +*.gif +*.jpg +*.png +*.js +*.css
should work.

But if you want frames to be mirrored, too, you may 
have to use more advances filters, like in:
-* +*.gif +*.jpg +*.png +*.js +*.css 
+www.yoursite.com/yourpath/*.htm