When specifying values in an INSERT statement, if the value is a string, you need to enclose it quotes. Also, if you are pulling values from a combobox, then you need to use the .text property to retrieve the text that is selected.

If fldRWUID is a string use quotes, if not - dont. I cant tell but your variable strBlah tells me its a string.

Try this:
Code:
Dim sSQL as string
sSQL = "INSERT INTO tblCampRegistrations (fldRWUID, fldRegionID, fldYear) " _
 & "VALUES ('" & strBlah & "', " & cmbRegion.SelectedIndex + 1 _
 & ", " & cmbYear.SelectedItem.Text & ")"
HTH,
Greg