I do not know how it works in Ireland precisely.. In other EU countries, they simply ask you for an ADDRESS (could be a friend's); in some countries they actually ask you to provide a rental agreement, and in other countries again, they may check if you actually live there... A residence permit is usually something handled by the local administrations/police. A work permit is handled by different ministries perhaps.
You'd better ask your spouse to check out Ireland's regulations with a local attorney, if that is important.
All I know for sure is that as a non-EU citizen, you can work only in the country where you are a resident and gave you a work permit via your spouse. If your EU spouse moves to another EU country, of course you can apply and automatically get your residence/work permit, but you'll have to apply and wait for it a bit...
Another option would be to look into Ireland's immigration laws. It could be that if you have a job offer, you can get a fast residence permit irrespective of your present status in the NL and/or your spouse...
From a technical point of view, being both countries Schengen members, you will be able to travel freely between the two; some employers might even offer you employment (although I doubt it..) and you could live there without problems most likely. The problems would arise if you need to have for example health care, or for whatever needs a local residence permit...
For further info, check out the EU website and Ireland's website.. Hope this helps.
QUOTE(Taichidi @ Apr 17 2008, 03:07 PM)

Thanks for the response.

If you're willing to answer a bit further?
"but he/she will need to get residence in Ireland too first..."
Alright, do you mean a residence permit, or an actual roof? xD Sorry about that, just wish to be as positive about this as possible before making any concrete plans.