For those that might need a Garda Police Cert for emigrating (mostly USA, Canada, Oz & NZ):
Ye can find the proper form here
- this is important cos most Guards apparently don't know about or don't have copies of this available especially in small stations. Just print it out and fill it in, along with a photocopy of birth cert & passport & something to show why you want it (I used the New Zealand job offer letter). I also included a photocopy of me old driving licence showing the Galway address which technically wasn't needed, but thought it might make them more well-disposed, having some proof I actually lived where I said I did and all.
If you can, go straight to the HQ of the Garda District
in which you lived, or in which you lived longest as this speeds things up, it's the District HQ that actually process the form and fill in the Cert.
Oh, and a stamped addressed envelope too to get the Cert back in.
Simples! I handed mine in to Mill St Galway on the Wednesday, and received it in the post in Derry on the Saturday.