>  You can't unless you providers knows about margo or ibiscus or you install 
> IP-NT.

 I need to learn to type without haste.
 
 You can't, unless your provider knows about margo and ibiscus. Means you
need to have a small subnet which is send to cactus. If this is not
the case - most certain - you need to install IP-NAT.

-- 
Markus Illenseer