Trigger alter and create table SQL Server 2008

Question

I would like to feed a table with all the updates and alters of tables in my database. For example: if I add a column called testColumn in the table Test my table would have something like this:

TABLE    COLUMN         DATE
Test     testColumn     2014-05-05 05:25:31

I tried this using sys.tables and sys.columns but it doesn't work

Someone can help me?