I'm not sure that is the same problem but I found that website 
<http://www.brainbell.com/tutorials/ms-office/Access_2003/> that I try to
download by HTtrack present every image with
<http://www.brainbell.com/.../nameOfFile.gif;431830> as location. The number
(431830) that follows image file extension (gif) doesn't permit the browser
(Mozilla Firefox 2.0.0.4) to visualize image of each page the mirrored
website. During mirroring HTtrack had downloaded every images in HTTrach
project subfolder. Every gif image in project subfolder presents a structure
like this   

accesspt_0101.gif;431830

For me the problem is the number that follows image file extension.

Therefore the question is how to setup HTtrach so that ignore everything is
beyond image file extension.