Dear pseudopaddy,

Here is a very good site that can help you with pronounciation, and it's even in the right dialect: Beginner's Guide to Irish Pronounciation.

I'd suggest that you study this page, then study the lyrics as you listen to the song on the CD. Then practice singing along until you feel like you've mastered the words. Headphones will help you to be more accurate.

Good luck to you!

-- Áine