Foreign and primary keys

I have an application in which i need to get the foreign key fields
from a table and then get all the foreign keys primary key field from
the linking table. Could some one tell me how i do this using
INFORMATION_SCHEMA. I have tried and can get the foreign keys but not
sure how to get the associated primary keys.See:
http://groups.google.com/group/micr...a0218d9e069531c

Razvan