Tables and File Groups

Hi everybody
I need query that will determine which tables are created on primary file group or secondary file group...
I know that i can exectute sp_help 'tablename' to see on which file group the only one table is.
But i have 2000 tables and it is very slow to execute sp_help for every table.
alex

select distinct G.groupname, (object_name(id)),
I.rows, (I.reserved * 8 ) AS KB
from sysfilegroups G inner join sysindexes I
on G.groupid=I.groupid
WHERE (I.indid ='0' or I.indid='1')
AND LEFT((object_name(id)),3)<> 'sys'
AND LEFT((object_name(id)),6)<> 'dtprop'
order by G.groupname, (I.reserved * 8 ) DESC, (object_name(id))