I want to return info about a SQL 2005 dtabases's tables.

This code returns the a table who's columns are TableName, ColumnName, ColumnDesc and Sequence. What do
I need to add to get Column Size, Precision, Null/Not Null, PK info, ect?

SELECT      o.Name AS ObjectName,
            c.name AS ColumnName,
            ep.value AS ColumnDesc,
            c.colid AS Sequence
FROM        sys.objects o INNER JOIN sys.extended_properties ep
            ON o.object_id = ep.major_id
            INNER JOIN sys.schemas s
            ON o.schema_id = s.schema_id
            LEFT JOIN syscolumns c
            ON ep.minor_id = c.colid
            AND ep.major_id = c.id
WHERE       o.type = 'U'
ORDER BY    ObjectName, Sequence