In-place:
rs.AddNew "SomeFieldName", "SomeValue"
Or in-place multiple fields
rs.AddNew Array("SomeFieldName", "AnotherFieldName"), Array("SomeValue", 1234)
Or using separate vars
Dim Fields As Variant
Dim Values As Variant
Fields = Array("SomeFieldName")
Values = Array("SomeValue")
rs.AddNew Fields, Values
Edit: This is how to synthesize a recordset for the AddNew sample above
Set rs = new Recordset
rs.Fields.Append "SomeFieldName", adVarChar, 1000, adFldIsNullable
rs.Fields.Append "AnotherFieldName", adInteger, , adFldIsNullable
rs.Open
I'm usually using a helper function CreateRecordset
as seen this answer.