> How is Httrack handeling dynamic pages? If I refer twice 
on 
> a page liks this: eshow.asp?errorid=16 does he download 
the 
> page twice or is it smart enough to see that this is the 
> same page?? 

Of course httrack does not duplicate these pages (even when 
the link is written using absolute/relative references, or 
from other pages/sites : httrack always do checks based on 
the absolute URL) ; it would create bloated mirrors!. 

Besides, httrack detect collisions (such as index.html and 
Index.html) and can handle by default query string hash to 
avoid simple collisions (like foo.html?p=1 and foo.html?p=2)

Remember also that httrack considers that
eshow.asp?errorid=16
and
eshow.asp?errorid=17

are different links. This is generalyl good ; except when 
you have other parameters which do not change the page 
content.