INSERT INTO with TADOQuery parameter problem

Hi,

Using TADOQuery, D5, Oracle8i.

I'm trying to insert into a table with an INSERT INTO statement, but I keep
getting
"Parameter object is improperly defined. Inconsistent or incomplete
information was provided".

Any ideas? I tried setting the parameters' data types, but I'm not getting
anywhere. The table has INTEGER, VARCHAR2(255) and DATE fields.

Steve