> However, when I do this, my cookies time out, and I don't 
> get all of the site. Using the update feature appears to 
> use as much bandwidth as the initial download, and since 
it 
> walks the tree the same way each time, I still don't get 
> the whole site.

I suppose the different cookie each time forces the remote 
server to refresh ALL the contents.

> I know that I want all the html pages in (for example) 
> rcmicroflight.com/aug03, and all the associated images, 
> which are mostly in rcmicroflight.com/images/aug03.

Set Options / Scan rules
-* +rcmicroflight.com/*aug03/*

> httrack <http://www.rcmicroflight.com/autologin.asp?>>; ID=XXXXXXXXXXXXXXX'
-c1 -b1 -f0 -X0 -v -r4 -O d:mirror -
> A10000 -n -* +aug03/*

httrack <http://www.rcmicroflight.com/autologin.asp?ID=XXXXXXXXXXXXXXX> -c1
-b1 -f0 -X0 -v -O d:mirror -A10000 -
n -* +rcmicroflight.com/*aug03/*

(note: r4 is therefore useless)