I understood what you were looking for, which is why I said that the script I linked to would be a starting point. If you use the script I linked to and the other system views I mention you can get the information you are looking for in one query. Something like:

[font="Courier New"]SELECT

   RC.Constraint_Name AS FK_Constraint,

   RC.Constraint_Catalog AS FK_Database,

   RC.Constraint_Schema AS FK_Schema,

   CCU.Table_Name AS FK_Table,

   CCU.Column_Name AS FK_Column

FROM

   information_schema.referential_constraints RC JOIN

   INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CCU ON

       RC.CONSTRAINT_NAME = CCU.CONSTRAINT_NAME JOIN

   INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CCU2 ON

       RC.UNIQUE_CONSTRAINT_NAME = CCU2.CONSTRAINT_NAME LEFT JOIN

   sys.columns C ON

       CCU.Column_Name = C.name AND

       CCU.Table_Name = OBJECT_NAME(C.OBJECT_ID) LEFT JOIN

   sys.index_columns IC ON

       C.OBJECT_ID = IC.OBJECT_ID AND

       C.column_id = IC.column_id LEFT JOIN

   sys.indexes I ON

       IC.OBJECT_ID = I.OBJECT_ID AND

       IC.index_Id = I.index_Id

WHERE

   I.name IS NULL

ORDER BY

   RC.Constraint_NAME  

   [/font]

This is not perfected, but it does do what I think you want it to do. It will show any tables with Foreign Keys where any column of that foreign key does not have an index on it.