> I want to download a single web-page. Its Adress is e.g.
> <http://www.xyz-server/cgi-bin/info.pl?name=scotch&id=1234>
> in multiple Articles I read about defining file names 
with 
> the -N option.

You probably want to use:
%[id].%t
or
%[scotch]-%[id].%t

For advanced use:

Details: User-defined option N and advanced variable 
extraction
   %[param:before:after:notfound:empty]