Are you taking into account that google might be filtering an irish result higher for someone searching on that term within ireland? Are you at number 2 if the same search was done from a US/Uk based computer? Saying that, i'd say that is a fairly competitive phrase and one that is growing in popularity as more and more people migrate from table layouts to css layout. It really is becoming the norm now and a lot of people still don't have the knowledge that you are providing on your site. What is your conversion rate like? Are you getting many visitors through that phrase compared to other phrases/links?
Dave