ADO, OraOLEDB And Stored Procedures

I am currently working on an integration project for an installation of Oracle Applications (OPM module). In our approach, we would like to use Visual Basic 6.0/ADO 2.6 to call the OPM API's.

The question I have, is how can I call a stored procedure that has a recordset as an input parameter. The API I wish to call has a header that looks like this, and the parameter that is causing me trouble is (p_item_rec):

GMIPAPI.Create_Item

( p_api_version        IN  NUMBER


, p_init_msg_list      IN  VARCHAR2 := FND_API.G_FALSE

, p_commit             IN  VARCHAR2 := FND_API.G_FALSE

, p_validation_level   IN  NUMBER := FND_API.G_VALID_LEVEL_FULL

, p_item_rec           IN  GMIGAPI.item_rec_type

, x_ic_item_mst_row    OUT ic_item_mst%ROWTYPE

, x_ic_item_cpg_row    OUT ic_item_cpg%ROWTYPE

, x_return_status      OUT VARCHAR2

, x_msg_count          OUT NUMBER

, x_msg_data           OUT VARCHAR2

);

I have been unable to find any documentation on this, and any help
that you could lend would be greatly appreciated.

Thanks,

Rory Monteith
Programmer