Dublin (and the surrounding commuter towns) is a very big place.
There are many variables which you will need to take into account.
Re driving:
Will you have car parking in the office?
What time will you need to be at work for?
What time will you leave work at?
An hour in rush hour traffic in Dublin can see you taking 1 hr to drive 5-10 miles...depending on the area you live and where exactly you work.
Re commuting by train:
Again this limits your options as we don't exactly have the best transport system. Somewhere along the coast line would be your best bet if commuting by train is your preferred option and you want to live in Dublin.
Do you want to live in the countyside but within a short distance of a town or in a more surburban area?
Do you want to live by the sea?
What facilites, apart from schools, do you require in the area.
I suggest you have a look at
www.myhome.ie . Use the search function there to input your required house type, max price, number of bedrooms etc and that should throw up some options for you....something to get started with.