Genealogy Links for Ireland 

South http://www.groireland.ie/history.htm

North http://www.groni.gov.uk/index.htm

Transportation http://www.nationalarchives.ie/search01.html

Finding the Origin of Your Ancestors in Ireland
http://main-kinzig.net/privat/bcramer/Genehlpr2.htm#Irish

Family Tree Maker's article on "Researching Irish Roots"
http://www.familytreemaker.com/issue4.html

Rootsweb Guide to Tracing Irish Families
http://www.rootsweb.com/~rwguide/lesson21.htm

Tracing Your Irish Ancestors http://scripts.ireland.com/ancestor/