Here you will find the full Hebrew text of the Pesach Haggadah.
The text has diacritics (Nikud).
I have received the file from someone after I have asked a question in the Beit Shemesh mailing list.
The full text was first published here on March 2000. It was available for download as an RTF file.
Now, at the end of 2004, I have moved the text to the WikiSource project, where people can copy it, and more important - correct it, on the spot.
To the full text of the traditional text of Haggadah Shel Pesach
Mah Nishtanah ?