Roles in MS SQL Server

I have assigned security at the column level but this is what I use for table level.  I am guessing if I used column level it would still work.

select sysusers.name as role_name, sysobjects.name as object_name, sysusers.uid as group_id,
  max(case when sysprotects.action = 193 then 'Yes' else 'No' end) as select_rights,
  max(case when sysprotects.action = 195 then 'Yes' else 'No' end) as insert_rights,
  max(case when sysprotects.action = 196 then 'Yes' else 'No' end) as delete_rights,
  max(case when sysprotects.action = 197 then 'Yes' else 'No' end) as update_rights
from sysusers
  left outer join syspermissions on syspermissions.grantee = sysusers.uid
  left outer join sysobjects on syspermissions.id = sysobjects.id
  left outer join sysprotects on sysobjects.id = sysprotects.id and sysprotects.uid = sysusers.uid
group by sysusers.name, sysobjects.name, sysusers.uid

This works for tables and columns associated with the user's role, but I also need to know if the user has access to any tables/columns outside of the role to which he belongs.  Sorry, I should've been clearer in the question to start with.  

Thanks again!