Create New Workbook For All Unique Values Of Column

this code "Creates a New Workbook" for each item listed in an excel table, then, copy all unique values in their respective Workbook and save it. So, the problem is this. instead of creating a "New Workbook", i want to open a previously created Workbook (template) and do the procedures listed above. Is this posible?

Sub Copy_To_Workbooks()
Dim CalcMode As Long
Dim ws1 As Worksheet
Dim ws2 As Worksheet
Dim WSNew As Worksheet
Dim rng As Range
Dim cell As Range
Dim Lrow As Long
Dim foldername As String
Dim MyPath As String
Dim FieldNum As Integer
Dim FileExtStr As String
Dim FileFormatNum As Long
Set ws1 = Sheets("Sheet1") '<<< Change
If Val(Application.Version) < 12 Then
'You use Excel 97-2003
FileExtStr = ".xls": FileFormatNum = -4143
Else
If ws1.Parent.FileFormat = 56 Then
FileExtStr = ".xls": FileFormatNum = 56
Else
FileExtStr = ".xlsx": FileFormatNum = 51
End If
End If..............