> What I have to do to put a somenthing appended to all 
URLs 
> For example if I just want to append somenthing 
> like '&print_mode=1' in a site like www.phpbuilder.com, 

Well, unfortunetaly this isn't possible - it would require 
to hack the htsparse.c routines, and this is really too 
specific to be added as an option.