> The image is requested out of a database by image.asp.
> When copy the site with httrack the IMG src='...' is not 
> replaced.
> How do I tell httrack to follow the link in IMG 
src='...', 
> download the contect which is given back by image.asp an 
> replace the IMG src='...'-link?
- Erase all default "MIME types" in 'Set options'/'Mime 
types' to avoid 'asp <-> text/html' automatic assumes.

- Use scan rules (Set Options/Scan rules) such as
+www.fellbach.de/*image.asp*

> The same problem arise if I have a HREF which downloads a 
> file which is generated out of a database by an dynamic 
URL.

Use scan rules, too - this should handle all cases.