I also would love to see a way to set aliases and 
equivalencies for cases such as (example cases...I'm not 
trying to download my own site):
kazemizadeh.net=kazemizadeh.com=www.kazemizadeh.net=www.kaze
mizadeh.com

Basically the issue is if a page on kazemizadeh.net has a 
<AREF URL like this:
<http://www.kazemizadeh.com/tips/tip0012.txt> 

instead of the equally valid working URL:
<http://kazemizadeh.net/tips/tip0012.txt>)

Then when I'm trying to download the whole site I'll miss 
that page.  If I add kazemizadeh.com to the original list 
of sites to d/l, I'll likely get a duplicate of 
everything...wasting my hard drive space and everyone's 
bandwidth.  There is a complicating case where one URL is 
an imperfect 'mirror' of another...in this case I'd suggest 
the aliased version be used first, and if it gives a 404 
(or other such error), that the unaliased URL be tried.

I think we need something like a mod_alias or mod_rewrite 
for Httrack, as there is in Apache.