It could be either your table does not have an index set up, or the database doesn't have any tables that have indexes.

You need to be connected to...

Here is a query to find all the indexes on a table.

select r.[name] as table_name, i.[name] as index_name, c.[name] as column_name

FROM sys.index_columns l

inner join sys.tables r on

l.object_id = r.object_id

inner join...

I like the ides of this, I would add ordering the columns as they are defined in the key. And for the programmers in my area I would add...