The .AddItem and .RemoveItem methods of combos and lists were added to the 2002 version of Access, and is not available in the 2000 version.
If you know the .AddItem method you probably also know how to loop the recordset and concatenate a string of values delimited by semicolon, which you can assign to the combos rowsource.
If you use ADO, you can also use the GetString method of the recordset - something like this
[tt]With Me!cboMyCombo
.RowSourceType = "Value List"
.RowSource = rs.GetString(adclipstring, , ";", ";")
End With[/tt]
Note that the 2000 version also has a limit of 2048 characters value list rowsource, while later versions have 32 750.
Roy-Vidar