> how to add for spidering for example 
www.domain.com/456.exe
> www.domain.com/cool.htm456.exe
> so 456.exe should be added for spider to EACH and every 
> link no exceptions. i cant seem to find it

When naming the local files? Use user-defined structure, 
such as:
%h%p/%n%q.%t456.exe

But this has absolutely no interest!!