As aghawdowey suggests, you could order the certificates. If you go to the GRO website for Ireland, you will see that they have a fax number (and presumably, email address?). I ordered some certificates by faxing a letter stating the type of certificate, name, district and quarter. I also faxed them my postal information and my credit card details. Within two weeks, my certificates had arrived (5 of them) and I think it only ended up costing me about $40 australian.
The certificates are 'photocopies', and doing this would be quicker than ordering LDS films which can take up to 6 weeks, and you don't have ready access to a Family History Centre anyway!