How to add feild size and null constraint check to this vba

Hi guys. I have a program that i want to add feild size and null constraint check on it and make it work on accesss 2000 . I be happy if some one help me modify this code so it generate Acess sql statements so that i be able to paste it in sql window of acces 2000 and it excutes. .Thanks

On click event that i used to call this function

Code:

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For Each T In db.TableDefs
    '''Skip the system tables
        If Left(T.Name, 4) <> "MSys" Then
     
         
          ''' this line determines the primary key of the table
          ''' by calling GetPk function from module
         
                pk = Left(GetPK(T, db), InStr(1, GetPK(T, db), "<-") - 1)
               
                cont = cont & ShowFields(T.Name) & vbCrLf & " primary key " & pk & vbCrLf & vbCrLf
             
             
        End If
    Next T
   
    ''' This line of code post the generated table statment to a massage box
   
    MsgBox cont

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Code:

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Function ShowFields(pTable As String) As String

Dim db As Database
Dim rs As Recordset
Dim I As Integer
Dim j As Integer
Dim n As Integer
Dim NL As String
Dim strHold As String, ST As String
Dim x As Variant

NL = Chr(13) & Chr(10) ' Define newline.

Set db = CurrentDb

Set rs = db.OpenRecordset(pTable)

n = rs.Fields.Count
ReDim x(n - 1, 1) As String


ST = "Create Table " & pTable & vbCrLf
For I = 0 To (n - 1)

ST = ST & rs.Fields(I).Name & " " & FieldType(rs.Fields(I).Type) & "," & vbCrLfNext I
rs.Close
db.Close
Set db = Nothing

ShowFields = ST '' returns the fields name to main function
End Function

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