How do I find names of people that came through Ellis Island, pre-1910?

Question:

How do I find names of people that came through Ellis Island, pre-1910?

My Mother In Law's parents and my Father In Law's parents both came from "County Down, Ireland." That is all the information we have. I know there are websites that have records, I just don't know who they were. Also I am not real sure if the names were changed as they came through Ellis Island. I think this was pretty common.
Thanks

Best Answer - Chosen by Asker: I belong to ancestry.com which offers Ellis Island records. Ancestry.com is the most widely used of the sights but it is a subscription service. Unfortunately it is the only source thru which we can access the Ellis Island records. If you can afford it it is worth every penny. Not only can you tap into all us records, including milser & probate records, but it now offers census records for united kingdom & canada. Users can view the original handwritten records. Some records will even tell you if they own a radio!

While many people were given new names when entering us it was only because their real names were too difficult to understand or the immigrants didn't know how to spell their names.

I would suspect that names from Ireland would be correct or would "sound" correct. Good luck - genealogy is such fun as I'm sure you know.