Off Topic Daft Question Time

[purplebear7]

Hi Guys,    Info, Advice, Help Required Please.

Seriously .. How do you go about teaching an intelligent dog (say a Labrador pup) to bark when (but only when) someone is approaching (or at) you door ?

Cheers in Advance [img alt=thumbs up width=25 height=18]http://fazer1000.yuku.com/domain/bypass/images/thumbsup.gif[/img]  Trev  (Getting Deafer by The Day [img alt=smiley: ohwell width=15 height=15]http://static.yuku.com/domainskins/bypass/img/smileys/ohwell.gif[/img])