Add new records to Table

I have tblMinisters with MinisterID (PK) and MinisterName, +++(with 50 records)

I have tblChurches with ChurchID(PK) and ChurchName, +++(with 7 records)

I have created new tblMatchMinisterToChurch with MinisterToChurchID(PK),
MinisterID, ChurchID

Currently things are set up as follows(which can easily be wrong since I
don't know what I'm doing..., but)

(I have a Query That's identical to this - qryMinistersToChurches (thinking
I needed one)

I have created a form frmMinisterToChurches with qryToChurches as
RecordSource and I have 2 combobox controls on it;

the 1st cb I have created cboMinisterID has:
Control Source: MemberID
Row Source: qryShowMinistersNames
Row Source Type: Table/Query
Bound Column: 1
Column Count: 2
Column Widths: 0";2.5"
etc

My qryShowMinistersNames looks like this:
MinistersID FullName

the 2nd cb I have created cboChurchesID has:
Control Source: ChurchID
Row Source: qryShowChurchNames
Row Source Type: Table/Query
Bound Column: 1
Column Count: 2
Column Widths: 0";3"
etc

My qryShowChurchNames looks like this:
ChurchID ChurchName

In My frmMinisterToChurches I want to:

1) Select a Minister (Fullname Shows) from the drop-down
2) Select a Church (FullChurch Name Shows) from the drop-down

after doing this -- do whatever (Maybe clicking a command button) to have
the unique combination selcted added to the Table (perhaps through the query)
tblMinistersToChurches. I am totallu confused, but if I learn this It's
liable to open up new opportunities...

There are just "Too many" things that have to be right for this to work, and
I'm too new to this to know. If a commandbutton is the answer to adding a
new combination what code should be behind it?

Thanks do much - sorry for the length of this -- but there are no shortcuts
in getting all this out.

TIA,

Jim