Irish accents anybody?

Okay, so long story short-ish, today my evil witch of a drama teacher (not going to name her incase of bricking problems) was discussing my character that I will be playing in my drama exam. She dropped the bomb shell that instead of my crazy character having it's original ENGLISH accent (easy as I AM English) to... wait for it... Irish. Yes you heard that correctly, Irish. So i was wondering if anyone had any tips or ideas on how on earth i can pick up an Irish accent in the matter of max. a week. Thanks for your help, J x