Hi Bev!
We flew from Dublin into Beauvais Airport with RyanAir a few years ago. The airport is very small and is quite far from the centre if Paris. There is a bus that takes you into the centre and drops you off at the James Joyce Pub if my memory serves me correctly. It is quite far - maybe 1hours drive. From there you could take a taxi or maybe a train to DLP??
The price with RyanAir was good, and that is why we went with them, but given a choice, I think flying into Charles de Gaulle would be more convenient. I think I heard recently that EasyJet have started a new service to there which should be around the same price as RyanAir.
Hope this helps
Maria