getting rows by an ID field or by another field in a table

I have a table with the fields: CREATE TABLE journal ( Date date NOT NULL, subject varchar(100) NOT NULL, entry longtext NOT NULL ) TYPE=MyISAM COMMENT='Journal table'; I was wondering if I should get the rows out by an ID field of some kind or maybe do a select on the subject? what would be the real best way? I am trying to get the date/subject to list on a webpage in a table and then when someone clicks on the subject (it will be a link), it will take them to a popup window (target=_blank) and then display the whole entry date/subject/entry. whats the best practice for that sort of thing? thanks