>Whenever a I create a Drobdown List with a RowSourceType of 1, and put say, 2 values in it (Y,N) I always get a 3rd item with just a space in it, until I've selected Y or N.

If you give it a defaut value like you plan, this shouldn't happen, so...

>I also want a combo box to default to the value "N" whenever it has no entries in it's RowSource - or should I stick to using the Database Container to issue a default value to the table itself.

Changing the Value property at desing time gives it a default value at runtim.

BTW, why not a checkbox?