Here is some code that uses the DAO object library:
Dim db As DAO.Database
Dim tdef As DAO.TableDef
Dim fld As DAO.Field
Set db = CurrentDb
Set tdef = db.TableDefs("tblCaseCount")
With tdef
.Fields.Append .CreateField("FirstHrCases", dbDouble)
.Fields.Append .CreateField("FirstHrComments", dbText, 75)
.Fields.Append .CreateField("ChangeOver", dbBoolean)
.Fields.Append .CreateField("UpdateBy", dbText, 20)
.Fields.Append .CreateField("UpdateWhen", dbDate)
End With
set tdef = nothing
Set db = Nothing