Pina Calada?

I'm not sure how 당신 spell it and i've searched the internet for an ENGLISH recipe of this drink.
At work earlier this week i had a few spare moments so i took over the bar and a visitor from another country asked for a pina calada (sp?), i apologised and explained i had no idea what it was and how to make it and asked if he could show me. Unfortunately the customer had no idea either, so he had to settle for lager instead the poor guy, so i was wondering - does anyone know the orogins of this drink and how to make it?

I will keep scouring the internet as i find it unbelieveable i can't find anything about it >:( but i may be because my internet has been screwing with me.

Any 조언 on the subject 또는 link would be greatly appreciated :)