This is a little late, but I found it when I was looking for information about Passover in Spanish.
Thanks to Spanish.about.com
¡Feliz Pascua de Resurrección!
Sunday March 23, 2008
The Spanish word for Easter, Pascua (usually, but not always, capitalized), is interesting for the fact that it doesn't always refer to the Christian holy day commemorating the Resurrection of Christ. As a word derived from the Hebrew pesah, it originally referred to the Jewish Passover, a commemoration of the exodus from Egypt - and still does. Over the centuries, it came to refer to various religious festival days in general, and thus can refer to as well to Easter, Christmas, Epiphany (the appearance of the Magi, traditionally celebrated January 6) and Pentecost (commemorating the dramatic appearance of the Holy Spirit to the early Christians, a day observed seven Sundays after Easter).
The word can stand alone to mean any one of those days when the context makes its meaning clear. Often, however, the term Pascua judía is used to refer to the Passover, and Pascua de Resurreción to refer to Easter.
In much of the Spanish-speaking world, Easter can surpasses Christmas as a time of celebration and religious observance.