IMO, shipping is a service that is always VAT'able or otherwise whatever you buy, its just like your other VAT goods whhich would not become non-VAT'able if s/he buys also zero rate vat goods. i do have a client whose web shop sells 20% and 0% VAT goods, but i have never been asked that question, ie, the owner does what i said above.RE intracom: i dont think a module is required, although an addon