Are you talking about WWF database tables or is this a general MS SQL question? if the latter is true then you should try to look for the answers in SQL Help or some site that provides such help. In case of the first, did you run the ms_sql_setup.asp to install the tables and stored procedures of the forum? if yes then you should open yer enterprise manager and open the sql server that u have installed for your database, there you will find your database and in it will u find your tables. open those tables in design view and you'l see the data types and other information about them.
again, be specific about the problem, What exactly is that you are facing?