programatically obtain primary keys

Given a table, is there a way to look into the systables and obtain the primary keys of that table via a select statement?

Thanks,

Phil

I got it nevermind.

select s.name as TABLE_SCHEMA, t.name as TABLE_NAME

, k.name as CONSTRAINT_NAME, k.type_desc as CONSTRAINT_TYPE
, c.name as COLUMN_NAME, ic.key_ordinal AS ORDINAL_POSITION
from sys.key_constraints as k
join sys.tables as t
on t.object_id = k.parent_object_id
join sys.schemas as s
on s.schema_id = t.schema_id
join sys.index_columns as ic
on ic.object_id = t.object_id
and ic.index_id = k.unique_index_id
join sys.columns as c
on c.object_id = t.object_id
and c.column_id = ic.column_id
order by TABLE_SCHEMA, TABLE_NAME, CONSTRAINT_TYPE, CONSTRAINT_NAME, ORDINAL_POSITION;