add column permissions to a new column in SQL server 2005

Can someone explain to me how to go about adding column permissions to a new column in SQL server 2005? I added a new column to an existing table, to which I want to add security. Thanks in advance!

To grant permissions on a table column -

GRANT <permission> ON <schema>.<tablename>(<columnname>) TO <GRANTEE>

<permission> = SELECT | UPDATE | REFERENCES

To deny permissions on a table column -

DENY <permission> ON <schema>.<tablename>(<columnname>) TO <GRANTEE>