Configuration :: System Error: Cannot Create Activex Component In Microsoft Word?

My name is Christian, I developed a web application in VB.NET 2005 that calls a Microsoft Word Application, it works fine in my develop's machine but when I put all of the code in production's server I received the following error:System Error: Cannot create activex component. following I put the code. If somebody knows how to solve this,

Dim oWord As Microsoft.Office.Interop.Word.ApplicationDim oDoc
As Microsoft.Office.Interop.Word.DocumentDim oTable
As Microsoft.Office.Interop.Word.TableDim oPara0
As Microsoft.Office.Interop.Word.ParagraphDim oPara1
As Microsoft.Office.Interop.Word.ParagraphDim oPara2
As Microsoft.Office.Interop.Word.ParagraphDim oPara3
As Microsoft.Office.Interop.Word.Paragraph, oPara4
As Microsoft.Office.Interop.Word.Paragraph
oWord = CreateObject("Word.Application")
oWord.Visible = True
oDoc = oWord.Documents.Add
oPara0 = oDoc.Content.Paragraphs.Add
oPara0.Range.Text = "Hola"
oPara0.Range.InsertParagraphAfter()