> All images are put on every page and referred to by
> links adhering to this kind of pattern:
> <http://www.thesite.com/res/images/view.php?=http://i>
> mg.thesite.com/category/images/imagename.jpg
> 
> Mentioning the URL of the site here is useless,
> since it requires offline organization-approved
> registration (one cannot register online). I have,
> however, found a web site that works in a very
> similar fashion, which is:
> <http://www.kapanlagi.com/selebriti/Okan_Cornelius/>
> 
> If you click on a thumbnail, you will be taken to
> another page which shows you the large version of
> the picture. The large picture on that second page
> is referred to by means of a PHP link as described
> above. I can't figure out how to get WinHTTrack
> fetch the large images. Anyone knows what I can do
> to solve this problem?
On <http://www.kapanlagi.com/selebriti/Okan_Cornelius/034.html> the picture
links to
<http://www.kapanlagi.com/u/image_view.php?image=http://img.kapanlagi.com/selebriti/Okan_Cornelius/034.jpg>

You get two problems.
1) the page is /selebriti/... and the link is /u/...
Httrack, by default only goes down. /u/ is not below /selebriti/ do it won't
follow the link.

2) the image is on img.kapanlagi.com but the mirror is on www.kapanlagi.com,
by default httrack will not cross sites

Easiest fix, add a filter +*.kapalagi.com/*

On your original site, you don't state what page the link was on so I can't
verify that's the same problem.